Popped into the marsh to fill my feeders.
There was a YB warbler calling close by, which I subsequently watched flitting around in a willow. I then went to check a wet area for snipe, and heard another calling from inaccessible scrub. Finally I went to the South Pond hide and had a YB warbler in with blue tits, a chiffchaff and a few goldcrest. The YB showed very well. All likely to be different birds as seen in very quick succession, not actively moving through, and in areas at least several hundred metres apart.
I then had to go to work. Given three birds in 30 minutes, I would imagine that there is a good chance of finding YBs anywhere around the village or in the scrub around the edge of the marsh this morning.