our team
strive to be the best
We invest in our people and infrastructure to enable us to be highly flexible, efficient and innovative.
As we have grown our team, our core focus remains:
- People – investing in and developing our employees to be experts in their fields
- Professionalism – providing our Clients with clear, practical technical solutions, efficiently
- Passion & Participation – creating an environment of knowledge transfer
- Performance – delivering on commitments to clients with flexible, integrated solutions
- Process – Quality processes with understanding of, and strict compliance within all regulatory frameworks
We are proud of our heritage which is one of technical excellence and strong core values.
Senior Management Team

Jo Bunyan
Managing Director / QPPV
Managing Director
More about Jo
Jo is one of the original co-founders of Callisto Consulting in 2003. She studied Applied Biology in Liverpool and subsequently went on to obtain an MSc in Pharmacovigilance through the University of Hertfordshire. She acts as a QPPV and also an RP Having undertaken the RP Gold Standard training. Her early career was spent working for a variety of different companies in a regulatory capacity including the Ministry of Agriculture and Boots Pharmaceuticals. She has a broad range of experience across regulated activities covering pharmacovigilance, regulatory affairs and GMP/GDP. Outside of work life is consumed by horses, dogs and skiing.

Julia Allison
Lead GMDP Manager / QP
GMDP Director
More about Julia
Julia has been in the pharmaceutical industry for 35 years and a GMP Qualified Person for over 15 years with relevant and practical experience in all aspects of Quality Management Systems, Quality Control activities, validation, supplier control, pharmaceutical regulatory requirements and GDP functions including acting as a Responsible Person/Import.

Paul Bunyan
Operations Director
Operations Director
More about Paul
Paul is a Chartered Chemical Engineer with a proven technical and business leadership background. An early career in engineering design and Project Management across the food, drink and pharma sectors provided the foundations for operating at Board level in companies, developing and implementing operational and financial business strategies. Paul joined Callisto in April 2021 and is responsible for the financial and business administration activities as well as ensuring all business and technical systems are fit for purpose to support company growth. Outside of work Paul plays cricket and hockey and enjoys skiing and riding his motorbikes.

Jo Vallans
General Manager Regulatory & Pharmacovigilance
More about Jo
Jo returned to work at Callisto in March 2020 after gaining experience with the Pharmaceutical Industry working for a THR/Homeopathic Medicines Manufacturer. Previous to this Jo had worked for Callisto for 7 years. Jo has a Biological Sciences degree and has worked within the Pharma Industry since 1991!! Jo started her career at Boots in the laboratory, moving into the Medical Affairs Team and then into Pharmacovigilance and Regulatory. Jo also was self-employed for 2 years providing both PV and Reg services to her clients. Jo has a wealth of experience in both PV, Regulatory and Medical Information and has a proven managerial background. At Callisto, Jo is responsible for the day-to-day management of the PV and Regulatory Teams ensuring that processes and procedures are adhered to, and staff are supported in their daily work and development. In her spare time, Jo is a frequent gym goer and walker. Jo also enjoys spending time with her family and friends, likes food and listening to music.

Marie Walsh
Technical & Business Development Manager
More about Marie
Marie is an experienced Regulatory Affairs professional, with over 20 years in the industry. Her experience covers human and veterinary generic medicines and medical device products. Over her career, she has gained much experience in almost all facets of the pharmaceutical industry including regulatory, pharmacovigilance, new product development and GMDP activities, with a particular interest in the commercial consequences of regulatory strategy. Having completed her MBA in 2021, Marie joined the team at Callisto in March 2022, to support the development of our business moving forward.
GMDP Team

David Wood
GDP Consultant
Quality Associate
More about David
David is a Qualified Pharmacist, Responsible Person & RPi with a background of General Management in pharmaceutical distribution and supply chains. David’s more recent experience has been in specialist import and export of licensed and unlicensed pharmaceuticals together with experience in repackaging pharmaceuticals for niche markets. David joined Callisto in February 2021 is a director with responsibility for Callisto’s GMDP operations and in addition acts as RP and RPi on clients’ licences as well as providing distribution and supply chain consultancy advice. Outside of work, David has a penchant for peculiar jazz, warm beer and bad DIY.

Spyros Methenitis
Technical Manager / QP
Quality Associate
More about Spyros
Spyros is a highly qualified and experienced pharmaceutical professional with nearly 15 years of experience in the industry. He is a Qualified Person (QP) ,in both the EU and the UK, bringing his expertise in quality systems, risk management, validation, and computer system validation (CSV) to the role.
Throughout his career, Spyros has been responsible for implementing and managing quality systems, ensuring compliance with regulatory requirements, and identifying and mitigating risks in the manufacturing process.
Spyros is also a Chartered Lead Auditor with a strong focus on continuous improvement. He has led numerous audits and assessments to identify areas for improvement and has implemented measures to enhance quality and compliance. His expertise in risk management has helped organizations to proactively identify and manage risks, ensuring that products meet regulatory requirements and are safe for patients.
Spyros holds a Bachelor’s degree in Chemistry and he is a Member of the European QP Association. He joined Callisto in April 2023 as Technical Manager/QP, his passion for quality and compliance, combined with his extensive experience and expertise, make him a valuable asset to our team.

Raheesa Ashraf
Quality Associate / RP
Quality Associate
More about Raheesa
Raheesa is currently an MHRA registered Responsible Person (RP) with Pharmaceutical and Community Pharmacy Background. An early career in community Pharmacy across a number of well-known pharmacy chains. Raheesa joined Callisto in March 2022. As Part of the Quality team, Raheesa is responsible for acting as RP, maintaining assigned client WDA licences and fulfilling responsibilities appropriate to these. Outside of work Raheesa enjoys practicing Arts and Crafts.

Amy Searle
Quality Associate / RP
Quality Associate
More about Amy
Amy joined Callisto in the Summer of 2022 having previously worked as an RP, RPi and WQP within the pharmaceutical wholesale industry. Amy is responsible for ensuring clients are operating in accordance with UK GDP and assists in providing support on Quality Assurance to the wider business.
Outside work Amy enjoys travelling, gardening, and swimming.

Jill Convery
Quality Associate
Quality Associate
More about Jill
Jill joined Callisto as a Quality Associate in September 2021 and is responsible for the management and prioritisation of batch review activities prior to release by the Qualified Persons (QPs). Jill ensures the receiving warehouse and laboratory are informed of the correct sampling and testing requirements prior to arrival, as well as working with the contract manufacturing sites (CMOs) to ensure any concerns are addressed on time. Jill enjoys working alongside clients to ensure the most efficient and quality service is provided. Alongside a degree in Biotechnology, Jill has a background in both QA and QC Pharma, including several years working in a QC laboratory analysing respiratory products, as well as involvement in Quality Management Systems (QMS) and QA Packaging. Outside of work, Jill enjoys walking, cooking, Parkrunning and having fun with her two daughters.

Rachel Wood
Quality Administrator
Quality Administrator
More about Rachel
Rachel joined Callisto as Quality Administrator in March 2021 and is currently completing her Level 4 Quality Practitioner Apprenticeship. Within the company, Rachel provides administration support to the Regulatory, Pharmacovigilance and Quality departments. As part of the Quality team, Rachel is responsible for administering the Quality Management Systems, providing Audit support to clients helping for client purposes, maintaining training records and recording KPIs. During her free time, Rachel enjoys photography, fitness and yoga
Regulatory Team

Charlie Mayes
Regulatory Manager
Regulatory Manager
More about Charlie
Charlie joined Callisto in 2017 as Regulatory and Pharmacovigilance Officer, having previous experience working in the chemicals regulatory sector. Since then, Charlie has grown alongside Callisto to become Regulatory Manager and has contributed meaningfully to the growing success of the Company. Unfortunately for Charlie, in his spare time, he follows Derby County. He also enjoys walking his dog, Drogo, in the Peak District.

Elysia Farrell
Senior Regulatory Executive
Senior Regulatory Executive
More about Elysia
Elysia joined Callisto as a graduate in 2020, after gaining a first-class degree with Honours in Biomedical Science from Nottingham Trent University. Within the company, Elysia works cross functionally as part of both the Regulatory and Pharmacovigilance departments, specifically in relation to Medical Devices. As part of the Medical Devices team, Elysia is involved in the preparation of Technical Files, with a more recent focus on the transition from the MDD to MDR, the registration of devices, undertaking specific responsibilities within Callisto as a UK Responsible Person and Elara as an EU Authorised Representative, and ensuring the vigilance requirements are met. Alongside this, other regulatory activities relating to medicinal products include marketing authorisation applications, variation submissions and building eCTD submissions for publishing. During their free time, Elysia enjoys running, trying different foods, and exploring new cities.

Claudia Citrolo
Senior Regulatory Executive
Senior Regulatory Executive
More about Claudia
Claudia has completed her bachelor’s degree in Molecular Biology and master’s degrees in Biomedical Sciences and Pharmaceuticals Technologies in Italy, before moving to England in Summer 2014. She has worked in the Regulatory Affairs department of a generic pharmaceutical company for over 7 years, gaining experience on national, DC/MRP variations and licencing procedures. Claudia joined Callisto in March 2022 as part of the regulatory team, where she is involved in the preparation of marketing authorisation applications, life cycle management of existing licences and other regulatory activities. Claudia enjoys reading, travelling and spending time with her friends and family.

Fahad Sheth
Regulatory Executive
Regulatory Executive
More about Fahad
Fahad completed a MChem in Chemistry with Medicines Development at University of Bradford in 2015. Upon graduation, they spent some time working in Regulatory Affairs Post Approval and Maintenance at Reckitt Benckiser. Following this role Fahad worked in Regulatory Affairs at Mundipharma and AstraZeneca in submissions and CMC functions. Fahad has spent the last 4 years within the Foods for Special Medical Purposes and Food Supplement industry supporting submissions and projects. Fahad joined the team at Callisto in March 2022. As part of the regulatory team, Fahad is involved in the preparation of marketing authorisation applications, building eCTD submissions and publishing. Outside of work, Fahad enjoys hiking, football, going to the gym and travelling.

Sarah Bains
Senior Regulatory Executive
Deputy PV Manager
More about Sarah
Sarah completed a MEng in Biomaterial Science and Tissue Engineering at Sheffield University in 2009. Upon graduation she completed a PG Cert in Intellectual Property. Following this her first regulatory role was for a generics medicine supplier. She has gained the majority of her regulatory experience working for a liquid medicine manufacturer, where she was involved in the life cycle management of existing licences.
Sarah joined Callisto in September 2022 as a Senior Regulatory Executive. She is involved in the preparation of marketing authorisation applications and variations.

Hannah Bedford
Regulatory Executive
Regulatory Executive
More about Hannah
Hannah joined Callisto in the Summer of 2021 after spending the previous 2 years working within the pharmaceutical industry in Dermatology and Vaccine sales. Hannah has a First-Class Honours Degree in Animal Health from Harper Adams University where she completed a placement year at an Animal Pharmaceutical company within the ruminant marketing team. Within Callisto, Hannah works in the regulatory team as a Regulatory Affairs Executive. As part of the regulatory team, Hannah is involved in the preparation of marketing authorisation applications and variations for UK and European licences, along with various additional regulatory activities. During her free time, Hannah enjoys being active and cooking.

Alex Reese
Regulatory Executive
Regulatory Executive
More about Alex
Alex joined the Regulatory team at Callisto in June 2021, after completing his MSc in Cancer Immunology and Biotechnology following on from studying BSc Genetics, both at the University of Nottingham. As part of the regulatory team, Alex’s duties include preparing of variations to marketing authorisations and submission of initial applications for pharmaceutical products in Europe and the UK, via such routes as the MRDC Reliance Procedure. Whilst at Callisto, Alex has also been involved in the production and maintenance of technical documentation for medical devices in the US, UK and Europe. Outside of work, Alex enjoys music, sport, having recently taken up golf, and travelling, for which he has been studying Portuguese.

Bradley Peters
Regulatory & PV Executive
Regulatory & PV Executive
More about Bradley
Brad joined the business as a placement student in 2019 and continued to work during his final year of study. Brad has now returned fulltime following the completion of BSc in Biomedical Science at Nottingham Trent University. Within the company, Brad works cross functionally as part of both the regulatory and pharmacovigilance departments to meet the needs of the business. Regulatory work undertaken by Brad includes the preparation of marketing authorisation applications and variations, eCTD submissions and publishing this work

Isabelle Agar
Regulatory & PV Executive
Deputy PV Manager
More about Isabelle
Isabelle joined Callisto in July 2022 after spending the previous 3 years within the pharmaceutical industry in both primary and secondary care account management. Here, she successfully sold influenza vaccines and pre-filled syringes for emergency medicine, working her way to becoming team leader.
Before this, Isabelle gained a first-class honours degree in Psychology from The University of Birmingham, graduating in 2019. Within Callisto Pharma Group she works as an integral member of both the PV and Regulatory teams.
Outside of work, she enjoys regularly competing her horse, playing tennis and walking her dogs.
Pharmacovigilance Team

Ellie Bunyan
Deputy PV Manager
Deputy PV Manager
More about Ellie
Ellie joined Callisto in 2016 as a part time Pharmacovigilance Officer. Upon graduating in 2019 from Nottingham Trent University with a First Class Honours Degree in Biomedical Science, Ellie joined Callisto full time and is currently Deputy PV Manager. She is responsible for ensuring a range of routine pharmacovigilance activities, such as producing/checking product safety reports, brand leader reviews, and reporting of spontaneous cases, are conducted to a high standard in a timely manner. She is also responsible for the testing and comparison of Patient Information Leaflets, writing readability outcome reports and bridging reports to support dossier applications. In her spare time, Ellie enjoys weight training and regularly competing her horses.

Daniela-Izabela Dumitrica
Senior PV Executive
More about Daniela-Izabela
Izabela completed a B.E. in Biotechnologies at Babes-Bolyai University in 2016. Following graduation, she spent a couple of years working in the Pharmacovigilance department of a top 10 specialty generic pharmaceutical company. Here, she paved her way to the position of Deputy Case Processing Supervisor, where she gained the foundation of her current experience. In 2020, Izabela began working as an assistant editor at a publishing company for peer-reviewed, open access journals. After realising her passion for the Drug Safety domain, she joined Callisto in April 2021 as a Regulatory & PV Executive. Here, Izabela is involved in the weekly pharmacovigilance obligations, as well as periodic activities, such as Periodic Safety Update Reports, signal detection and Risk Minimisation Measures. During her free time, she enjoys hiking, traveling and reading, and she also tries dabbling in arts and crafts.

Kieran Busby
PV Executive
PV Executive
More about Kieran
Kieran completed a BSc in Biomedical Science at Lincoln University. Graduating and beginning to work within an ISO:150189 accredited microbiology laboratory testing COVID-19 samples has provided him with rigorous attention to detail and set him up well for a role in pharmacovigilance. Kieran joined the team at Callisto in March 2021 and is part of the pharmacovigilance team that are responsible for all aspects of pharmacovigilance such as Product Safety Reports and routine activities. During his free time, Kieran enjoys walking, especially around nearby Elvaston Castle, listening to music and trying out new foods.

Ollie Phillips
PV Executive
PV Executive
More about Ollie
Ollie joined Callisto as a graduate in March 2021, after gaining a Master’s degree in Pharmacology from Nottingham Trent University. Within the company, Ollie works cross functionally as part of both the regulatory and pharmacovigilance departments. As part of the regulatory team, Ollie is involved in the preparation of marketing authorisation applications, building eCTD submissions and publishing. He has also had experience working with medical devices and clinical evaluation production. Additionally, Ollie is responsible for the monthly regulatory intelligence newsletters which identifies important regulatory information for our customers. While also working in pharmacovigilance, Ollie completes routine PV services including safety report preparation and literature screening to help maintain the safety profile of our customers products. In his spare time, Ollie enjoys playing golf at his local club in Beeston as well as county badminton. He is also a keen cook and always enjoys trying something new from anywhere around the world.

Harry Vallans
PV Officer
PV Officer
More about Harry
Harry joined Callisto in January 2021 as an apprentice, studying Regulatory Compliance (Level 4) with Babington College. Within the company, Harry works primarily as part of the pharmacovigilance department, while also assisting the regulatory department to help with his studies As part of the PV team, Harry is involved in all aspects of pharmacovigilance, including Literature searching, Case reporting, analysis of adverse event reports, preparing monthly PV summaries, PSMF updates and safety reviews. Harry also helps with regulatory activities like preparing safety variations. In his spare time, Harry enjoys walking and playing card games, alongside being an avid football fan.

Isobel Lee
PV Officer
PV Executive
More about Isobel
Isobel joined Callisto in the Summer of 2022 after spending the previous 2 years working as a laboratory scientist at the NHS University Hospitals of Derby and Burton.
Isobel graduated from the University of Manchester in 2020 with a BSc.(Hons) in Biology. As part of the PV team, Isobel is involved in all aspects of pharmacovigilance, including Literature searching, Case reporting, analysis of adverse event reports, preparing monthly PV summaries, PSMF updates and safety reviews.
During her free time Isobel enjoys keeping fit and travelling.

Bradley Piper
PV Officer
PV Executive
More about Bradley
Brad joined Callisto in September 2022 after graduating from the University of Central Lancashire with a BSc (Hons) in Physiology & Pharmacology in the summer of the same year.
As part of the PV team, Brad is involved in all aspects of pharmacovigilance, including Literature searching, Case reporting, Analysis of adverse event reports, Preparing monthly PV summaries, PSMF updates and Safety reviews.
In his free time, Brad is an avid Newcastle United fan, film lover and likes visiting new countries.
Administration Team

Sam Bunyan
Senior Financial Executive
Senior Financial Executive
More about Sam
Sam joined Callisto in January 2018 and has since obtained the Certificate in Business Accounting and is currently working towards qualification as a Chartered Management Accountant with CIMA. Within the company, Sam works cross functionally as part of both the financial and pharmacovigilance departments. Sam is responsible for payables, invoicing activities, and the general bookkeeping. Alongside this, pharmacovigilance activities include routine reviews of product safety information and the submission and maintenance of product information on XEVMPD. During his free time, Sam enjoys skiing and is a keen PC gamer.

Josh Lawrence
Business Administration Executive
More about Josh
Josh joined Callisto in May 2019 as a Pharmacovigilance Officer. Since then, he has increased responsibilities in all fields within Pharmacovigilance, regulatory and financial administration. Josh is responsible for user testing, complaints, quality checking, monthly statements while also helping with new business onboarding and pharmacovigilance activities. When Josh is not at work he enjoys playing golf and football.
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