Hi Fred; we had a match there three weeks ago. Fished pretty well but no sign of any bream.
I won it from three below the Thame mouth with 11-15 of roach, initially on caster but mostly on tares. (Not real tare size fish, mostly5/6 to the pound but any smaller bait got bleaked most of the time))
Balled it with 10 big ones at 11-12m , VDE Black Roach with caster and frozen pinkie added but think that this might have been too active a mix on the day as pulled the bleak in which were a real ‘mare for everyone. Fed hemp/ caster and a few tares over the top; could get odd roach at half depth on tare but not consistently and had to keep going deeper again.
Chub might start to show around now (no proper ones in our match) but wouldn’t rely on them.
Plenty of fish on pole and/or topper from the swims in the trees behind the houses where our next three weights came from- mostly on caster ( I was the only one to get the seed to go)
Some nice perch as well if you have the odd look very close on the inside if depth allows.
Best of luck; lovely venue, until late OCtober anyway….