Oh no Soupy! You missed a brilliant lake! If you take the road down to the Thames Court Pub from the roundabout at the bottom of Shepperton High Street. Go round the bend past the restaurants and on the left is a sign towards Thames Court, which is also signposted as a dead end, take that and a little further on, on the left, is the sailing club and it's marked up 'Swim' (although you have to look over your shoulder once you've passed the small turning!! Follow that down to the grassy car park!
There's changing rooms in the sailing club with hot showers and a bar above!
Lovely sandy patch to get down and into the clean, fresh water. Very, very few weeds! Just the odd strand or two floating free on the surface.
I'm very impressed and free for first visit!
Open 'till 11am I think on the weekends so no need to have to get up at stupid o'clock!
You can hire wetsuits from them too. Very friendly people. And the bonus for me was I bumped into an old mate who does IM stuff too!
I shall be back on the weekend, probably Sunday!