Here in Milton Keynes in the last 4 years I've only ever had one Yellow-tail, Brown-tails on the other hand seem to be very common. Last night they must've started to emerge, with 5 coming to the trap.
Other NFY's last night Anania hortulata, Cabbage and Acrobasis suavella(i think)
Also had 2 micros I'm not sure about, first may be an Acleris? or now thinking Oak Nycteoline.
Wednesdays NFY's were Scalloped Oak and Lesser Yellow Underwing.