Senior management

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Manish Nanda, Director of Development and Joint Chief Executive Officer

With over 10 years experience in the health and social care sector, Manish has an extensive background in Criminal justice and substance misuse service design and delivery. Having joined WDP in 2006, Manish has worked in wide a variety of services and held operational positions ranging from Arrest Referral Practitioner to Operations Manager. More recently as Director of Development, Manish has led on WDP's organisational development, resulting in WDP widening its offering to include fully integrated substance misuse, smoking cessation and healthy behaviours services. Manish also serves as a trustee at Link to Change, an East of England based charity, working with vulnerable young people at risk of sexual exploitation. 







Dr Arun Dhandayudham, Medical Director and Joint Chief Executive Officer

Arun has been a Consultant in Addictions Psychiatry for over 10 years in both the NHS and the Third sector.

He trained in Psychiatry in Oxford and Cambridge before becoming Clinical Director of the NHS addiction services across Northamptonshire and Bedfordshire. He then worked in CRI before joining WDP as Medical Director in January 2015. A keen interest in management led to an MBA at Henley Business School and membership of the Faculty of Medical Leadership and Management. Arun has extensive experience of setting up and running community drug and alcohol services, prison substance misuse services and dual diagnosis services.

He continues to be actively involved in the Royal College of Psychiatry Addictions Faculty where he is Coordinator of the Regional Representatives network as well as Chair of the Addictions Faculty Patient and Carer group. His research interests include pain management, online shopping addiction and chronic arousal states such as anxiety and their impact on addictions treatment.






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Rachel Volpe, Director of Operations & Safeguarding Lead 

Rachel joins us  from  Public Health England’s Alcohol and Drug Team East of England  where she has over 10 years of experience in the substance misuse field. Her works spans front-line delivery and implementation of both community and prison provision and commissioning and strategic overnight of integrated treatment systems in Bedfordshire and then the East of England.  She is passionate about partnership working to best support the needs of our clients and  working with the most committed and talented staff in the field.