When chatting to different people you always get recommendations for different places to visit and to shoot, and Simon was recommending Paxton Pits nature reserve.
The following comes from their web site
Paxton Pits Nature Reserve is a rich mosaic of wildlife habitats, with beautiful lakes, riverside, meadow, reedbed, scrub and woodland. It is open for visitors all year round, and has a Visitor Centre for refreshments, books and friendly expertise open most days, 10am-4.30pm.
Famous for its nightingales and cormorants – and host to a wide variety of other birds, insects, mammals and flora – you’re sure to have a great experience whatever time of year you visit.
Paxton Pits is situated in the Great Ouse valley in Little Paxton village, between St Neots and Huntingdon, and just off the A1. The nature reserve is managed by Huntingdonshire District Council in partnership with the Friends of Paxton Pits. It relies on you, its visitors and enthusiasts, for raising funds to improve the facilities and habitats for wildlife.
The Reserve is also home to the Wildlife Trust for Bedfordshire, Cambridgeshire and Northamptonshire’s Environmental Education Centre. The Trust runs events for children and families, giving everyone the chance to get involved with wildlife whatever their age.
You can find out more here https://paxton-pits.org.uk/
The address is Little Paxton, Saint Neots PE19 6ET and the post code takes you to the right place using Google Maps. There are marked walks, hides, etc and a visitor centre with information & tea, coffee, biscuits, wc, etc, but as it’s manned by volunteers, isn’t always open.
A pub, The Anchor, nearby is a possible meeting place if you’re arranging a visit.