May round-up (all VC14, sorry that some of it is a bit late):
Single Tebenna micalis around Fleabane at Newhaven on the 24th.
Two Tebenna micalis around Fleabane at Peacehaven on the 26th.
Presume these are all primary migrants? Fingers crossed for colonisation attempt!

Bordered Straw to Actinic/synergetic combo at Saltdean on 22nd.
7 Silver-y seen in daylight on Downs above Saltdean on the 17th.
30 + Painted ladies along the coast between Brighton and Telscombe Cliffs on the 12th.
Not a migrant, but maybe of interest: Pammene agnotana found new to Sussex on the 11th.