Thing this year, the temperatures and weather across the country have been so different from area to area.
North of the country had the warm dry weather for a while, while East of East Anglia was cold and wet.
Yet the Midlands was warm and wet, and a few lakes made it to temperature.
As @levigsp has pointed out in the past though, if new males are stocked, as soon as it gets warm enough all the fish go for it, even if its only for a morning.
That's a difficulty in itself as only 1 of the big fish has a known weight, and although seen, she hasn't been caught in the last 12months. A couple of the biggies are known males, and there are only 105 known fish in 45acres, with numbers of uncaught fish.
One fish came out last night, which is possibly 5lb down, I've yet to see the pics, but it was a common and there are only 4 known commons in the lake, but none are known to be high doubles, they are mucho bigger!