Contact Us

For general enquiries, please contact the main office. For something more specific, please find the relevant office or team member below.

Main Office:
Thames21, Walbrook Wharf, C/O City of London Corporation, 78-83 Upper Thames Street, London EC4R 3TD
Tel: 020 7248 7171

Satellite Office:
Thames21, The Lock Office, Bow Locks, Navigation Road, London E3 3JY
Tel: 0207 515 3337

Welsh Harp Environment Education Centre:
Thames21, Welsh Harp Environmental Education Centre, Birchen Grove, London NW9 8RY
Contact us via Tel: 07711 701 694 or via email

For corporate volunteering enquiries telephone 07584 172209 or contact us via Email.

The Team

Thames21 has a core team of full time staff members, several committed delivery support staff and thousands of public volunteers. Please look down the list and contact the most appropriate person.

Debbie Leach
Thames21 Chief Executive
: 07976 559778
Debbie joined Thames21 as Chief Executive in June 2005, bringing 15 years’ experience in the voluntary sector. Her work with young people’s and educational charities led to a growing interest in broader social inclusion and community development issues. Debbie lives in Putney, and is a keen boater and sailor.
“The great thing about rivers and canals is that they appeal to everyone, regardless of age, background or culture. It is fantastic to see the new friendships formed when people work side by side to improve their local waterway.”

Chris Coode
Deputy Chief Executive and Senior Programmes Manager
Tel: 07813 799757

Chris is head of education and training at Thames21. Before joining Thames21, Chris worked as the Education Coordinator at the London Aquarium, and he has worked as a warden on marine wildlife reserves along the coast of Dorset and Cornwall. He is one of the world’s greatest rockpoolers.

John Bryden
Senior Programmes Manager
River Improvements
Tel: 07968 012828
John is head of river improvements at Thames21. He came to Thames21 from the Environment Agency, where he worked for seven years leading river restoration, wetland, and SuDS projects. He may be appeased with offerings of cricket bats and tea.

Emma Harrington
Head of Volunteering
Tel: 07738 983334
For more than twenty years, Emma has helped communities form volunteer groups, organise events, and connect with key organisations and funders. She was Head of Operations for the Lea Rivers Trust for six years. A native Londoner, she is now ensuring that London’s diverse population is involved in its rivers and waterways.

Michael Heath
Personnel Manager
Tel: 07968 805751
Michael came to Thames21 as River Cray Project Officer in 2011. He has lived near the Cray for more than 18 years, and is a founding member of the Friends of Foots Cray Meadows. Michael is a retired police officer whose other interests include photography, travel, and cooking.

Alison Archer
Fundraising Manager
Tel: 07554 402772
Alison has a background in marketing and moved into content development and fundraising at Chatham House where she headed up the conferences programme. She is a founder member of the Pymmes BrookERS, a community group that works with Thames21 to restore the Pymmes and Salmons Brooks. She loves walking London’s rivers and wild swimming and is usually happiest in a kayak.

Lawrence Beale Collins
Corporate Partnerships Officer
Tel: 07584 172209

Lawrence joined Thames21 in 2014 to help steer catchment partners through the legislative process of river improvement as Catchment Partnership Coordinator for the Ravensbourne. He switched to his current position in April 2018. Formerly a journalist, he completed a BSc and MSc in environmental studies at UCL in 2010. He leads bird-watching walks and river wades in his spare time, and once shared a lift with the Archbishop of Canterbury.

Vahide Berisha Bazargan
Office Manager
Tel: 07827 240457

Vahide came to Thames21 after volunteering for foreshore clean ups. She has worked for the Carbon Trust and before that at Bateaux London luxury boat cruises on the Thames; so she is happy to be back by the river again. Vahide loves being outdoors, gardening, cooking, crafting and trying to lead a life kind to nature and wildlife while encouraging others to do the same.

The CaBA Catchment Partnerships Team

Dr Lucy Shuker
Catchment Partnerships Team Leader & Brent Catchment Partnership Development Manager
Tel: 07523 512848
Lucy is a Chartered Water Environment Manager (C.WEM, C.Env) with a PhD in Interdisciplinary Assessment, Planning and Managing Urban Rivers, she joined Thames21 in 2017 with over 15 years of experience in WFD policy, aquatic sciences, hydrology and geomorphology, from working with the Environment Agency and water consultancy. Lucy’s ongoing research includes citizen science and natural capital accounting. When not in, on or around water, Lucy will be busy nurturing the fruit and veg in her London forest garden, or unwinding with yoga and other crafty or musical pursuits.

Jessica van Grootveld
Catchment Partnership Development Officer
Tel: 07826 913 261 

In 2016 Jessica graduated from Wageningen University with a Master’s degree in International Land and Water Management including Urban Water Management. She has previously worked for VINU, a Dutch project management and consultancy firm, and for the National Association of Water Companies in the Netherlands. She enjoys cooking, being outdoors and spending time with friends and family.

Natalie Breden
Catchment Partnership Development Officer
Tel: 07557 970812

Natalie has joined Thames21 after travelling around South America. In previous roles she managed catchment scale citizen science projects and river and floodplain restoration projects. She has also worked in environmental education sharing her passion for the environment and freshwater with younger generations. You will often find her running along her local river in Sussex.

Billy Coburn
Development Officer
Tel: 07557 970812
Billy has worked at Thames21 for seven years, completing a variety of volunteering and river enhancement projects in the Colne, Crane, Brent and Lower Lea Catchments. He holds a CIWEM accredited MSc in Pollution and Monitoring, with an Urban Surface Run-Off specialisation, utilising computational statistical techniques. His hobbies include playing guitar, badminton and ultimate frisbee.

Kirsten Downer
Communications and Campaigns Officer
Tel: 07711 701696
Kirsten has more than 15 years’ experience of journalism and communications. She’s previously worked for London Wildlife Trust, the RSPB, and the Women’s Environmental Network. She has also worked as an environmental educator and is a trained Forest School teacher. She loves nature writing, collaborating with artists and getting covered in mud.

Vicky Duxbury
Outdoor Learning Officer
Tel: 07568 133 201  

Vicky is the Outdoor Learning Officer for Headstone Manor Park in Harrow. Her Lottery funded role, hosted by Harrow Borough Council, is to engage the community with their waterways and the wildlife in the Park. The role is linked to the HLF & GLA Parks for People landscaping works which will improve local water quality, reduce flash flooding, and create new habitats around the Park.  She is passionate about all wildlife and is often gazing skyward for swifts or in the undergrowth for hedgehogs!

Deb Frankiewicz
Welsh Harp Environmental Education Centre Education Officer
Tel: 07711 701694
Deb develops and delivers the fun and interactive education programme to school groups and the local community at the Welsh Harp Environmental Education Centre in West London. Initially trained as a Geographical Information Systems Analyst in Australia, Deb moved to London and soon discovered her love for working with children in the outdoors.

Poppy Flint
Training Officer
Tel: 07739 627 665 

Whether as an artist, events coordinator or educator, Poppy has always had a focus on bringing people together to learn about the environment around them. Following an MSc in Education for Sustainability she worked freelance with various charities including The Country Trust, SEEd and This is Rubbish. Poppy will still occasionally be spotted dressed as a wonky carrot.

Stephen Haywood
Natural Flood Management Officer
Tel: 07500 842 283

Steve started working with the Environment Agency in South West England on their water quality monitoring programmes, but has followed a route into environmental education over the last few years. A keen surfer and paddler, if he’s not found near water, he’ll be in the mountains somewhere in the world.

Lily Mackie
Land of the Fanns Project Officer
Tel: 07523512850
Lily joined Thames21 after volunteering in her local area on a number of projects. Lily is in the process of completing her masters in freshwater management at Queen Mary University of London. She enjoys painting, baking and is teaching herself to knit.

AJ McConville
Thames River Watch Coordinator
Tel: 07585 302623
AJ joined Thames21 in 2015 from the Institute of European Environmental Policy where he worked on biodiversity policy. Interested in grassroots work and urban ecology, AJ delivered the Trout in the Classroom project for the Wandle Trust alongside his policy duties for two years. He plays guitar in a band, these days mostly restricted to friends’ weddings.

Ella Parker
Education Officer
Tel: 07523 512852

Before Thames21 Ella worked as a Geography Teacher in a diverse secondary school in Hackney, North London and also schools in Brighton and Worthing. She is passionate about Geographical education and getting young people from the inner city out into nature. Ella is also studying for a an MSc in Environment and Sustainability at Birkbeck University.

Clare Smith
River Cray and Thamesmead project officer
Tel: 07500 840596 

Clare joined Thames21 in June 2018 as project officer for the River Cray and Thamesmead, working with volunteers and communities to improve their local waterways. Previously, she studied environmental sciences and worked as an ecological consultant for eight years. She also volunteers for the Wandle Trust’s invasive non-native species project and loves walking and exploring the outdoors.


Dr Nathalie Gilbert
INTCATCH Project Manager
Tel: 07711 701695
With a PhD and Masters in Environmental Science from the University of East Anglia, Nathalie joined Thames21 as the lab manager. She is now Project Manager for INTCATCH, a multinational project that aims to develop user-friendly water monitoring tools to provide real-time data.

Caitlin Curry
Hogsmill INTCATCH Project Officer and River Pinn and Frays River officer
Tel: 07523 512851
After volunteering for environmental projects in Indonesia and working for the UN in Germany, Caitlin is glad to be returning to the UK to help with her local rivers. Caitlin combines her role as INTCATCH Project Officer for the Hogsmill with being Thames21’s project officer for the River Pinn and Frays River.  She enjoys getting out and about to enjoy London’s river walks.

Anna Petras-Forizs
Salmon’s Brook INTCATCH Project Officer
Tel: 07523 512849
Anna joined the charity after a year of volunteering and now she is the INTCATCH project officer in the Salmon’s Brook catchment. She has a degree in environmental science and she is also completing a master’s degree in freshwater management. Unsuprisingly, she likes rivers and frogs and plants.

Paul Busby
Citizen Crane Project Officer
Tel: 07554 402727

Paul joined Thames21 in 2016 as the River Pinn Project Officer, having helped found the Friends of the Yeading Brook and River Pinn volunteer group. He is a Chartered Chemist, having worked in Senior Management positions in the Food and Pharmaceutical industries, but has always found time to volunteer. He still volunteers as a Cub Scout Leader.