Charlie
Thanks for your input. I have found one (maybe it) by the bridge. It is very small as you suggest. Only suitable for one maybe two rods max. The water is spring fed and consequently absolutely pristine and is about three/six foot deep with some beautiful browns. I am not sure that the owners/owner have much idea about marketing but the layout is good in that one is not able to cover the whole of the water, with inaccessable areas at either end where the fish can and do rest up. Together with bank fishing on one side only. Like most of the brown population if you can see them, they can see you, so the fishing was testing.
Two fish (around 2lb each) returned yeterday in muggy conditions following capture on a bibio an a hatching midge. I'd go again just for the water clarity,
very Hampshire!
One quaint touch which I enjoyed was the returns box nailed to the fence by the gate. I lifted the top to find a wren's nest with four tiny eggs. The roof was replaced quickly and carefully.