Never come across it on "big" bream waters though as the numbers are normally so low. Winghams interesting though as from the little experience and information Ive got they do seem to feed at quite different times (once again generalising)
You're right, Budgie, the big bream at Wingham are definitely night feeder but as they seem to only swim around in small groups the approach has to be different from the big beds of bait approach. You are not looking to keep 100-200, 5 to 6lb fish interested. You're looking at half-a-dozen 15 to 20lb fish which, I believe, do not conform to the usual bream habit of following regular patrol routes and stopping to gorge themselves. I think that really big bream are more randomly nomadic and may even be put off by big beds of bait.
On another lake, I have had 6-8lb bream feeding on spod spill just in front of me and then watched as 4 much, much bigger bream come along and instead of joining in, just stand off and let the small fish feed. These small (!) bream then cleaned up and moved off. The big bream then sauntered off after them. It makes you wonder how these bigger fish got to the size they were!
Having said that big bream don't abide by the usual rules by following regular patrol routes they do still feed in similar situations. I think they still avoid weed and prefer flatish, clean areas such as the tops of bars. My approach to big bream is to locate the sort of areas that I think they will feed in and adopt guerilla tactics! In other words, look to ambush the small groups and hopefully pick off one fish from the group before moving on.
Wingham isn't unique, it's just a big bream water that is not heavily fished so it doesn't respond to the usual tactics. You have to think about your fishing and that is one of the reasons I love it.