Pembrokeshire West Wales T 01646 636754 | M 07398 116365

Biodiversity Solutions


Biodiversity Solutions was established in 2009 by a group of self-employed ecologists in West Wales to act as their marketing and office portal and to seek to put something back into conservation in the area. The company is a non-profit making social enterprise whose income is derived from a small charge to ecologists for the services provided and any surplus is dedicated to conservation projects.

The office is manned by Sally Archer-Thomson, an Environmental Science graduate, and is based near Haverfordwest in Pembrokeshire. She will deal with enquiries promptly and engages with ecologists on a daily basis. 

Current ecologists who are members of Biodiversity Solutions enterprise:

Anna Sutcliffe BSc (Hons), MCIEEM, MMO, Ecological Clerk of Works, (Pembrokeshire Ecology)

Anna is a very experienced and licensed bat surveyor and is an appointed bat advisor for Natural Resources Wales. She is a very good botanist and all-round naturalist and has a wide experience of studying and surveying plants, seabirds and sea mammals. Anna has over 30 years of experience in a wide range of habitats and is based in west Pembrokeshire. As one of the most active ecologists in the area she has accrued a long list of clients and can be contacted at

Debbie Kearsley-Evans BSc (Hons), PgDip

Debbie is an experienced ecologist and has been responsible for the conservation management of large land holdings. She is a licensed and experienced bat surveyor, an accomplished botanist and has a great deal of experience of dealing with invasive species. Debbie is based in West Glamorgan and works closely with Anna in a range of projects. She carries out work in West Glamorgan and Carmarthenshire and can be contacted at

Denbeigh Vaughan BSc (Hons), ACIEEM (Landsker Ecology)

Den is an experienced and dedicated ecologist working primarily with bats and birds. His 25 years of experience ranges from seabirds to upland bird surveys working with a number of conservation and scientific organisations. He has a particular interest in bats and dormice and is licensed for both. Den is based in mid Pembrokeshire and can be contacted at

Sarah Allen BA (Hons) (Spark Ecology)

Sarah is a licenced bat ecologist and completed her bat survey qualifications in 2016 and is a sound surveyor. She has had a lifelong interest in conservation and ecology alongside her wildlife photography business. She is based in West Pembrokeshire but travels throughout the county and can be contacted at

Sian Williams BSc (Hons), CEnv, MCIEEM (Kite Ecology)

Sian is an established ecological consultant with over ten years practical experience, and has NRW licenses for bats, dormice, great crested newts, otters and water voles.  She is an experienced mammal ecologist with a special interest in bats. Her experience and knowledge are highly respected. Sian is based in south Pembrokeshire.

David Gardner, B.Sc. (Hons.) M.Sc.

David has worked for most of his life in the fields of environmental management and conservation in West Wales, firstly as Manager of a salmon and trout re-stocking farm and then as Fisheries and Conservation Manager.  He has also spent 5 years working with the inshore commercial fishing industry to improve their environmental and financial sustainability and has previously served on the RSPB Wales Advisory Committee and as Chairman of the Wildlife Trust of S & W Wales.  He is currently assisting the Pembrokeshire Rivers Trust with riverine habitat and ecological improvement work and can be contacted at

Russ & Ginny Spenceley  (Silent World)

For over 20 years this partnership has looked after and specialised in reptiles. They are experienced surveyors and advisors and have worked on some very large projects including those where translocation of animals is required. They also run the Pembrokeshire Hogspital helping to conserve hedgehogs in Pembrokeshire.