Thought I'd better post some more pics of this one.
VC 30 recorder says it is most probably Acleris hastiana but it has been pointed out that it closely resembles Oak Nycteoline by a few "moth-ers". Size, markings and flight season fit the bill.
SO, I've dug up some more pics showing side view to level the playing field. It looks like an Acleris sp from these views. Thanks to Ben for opening this interesting debate and comments are as always welcome.