I learned to dive in the UK last year & all I have is the Oceanic semi-dry, same as yours. I dive from May through to October in it and although I must admit that I am thinking about moving to a dry suit next year just to extend my Uk season, I think the Oceanic suit is fab !!
This year I've got a 2mm neoprene vest as well just for an extra layer till the sea warms up a bit. Agree that the worst bit is seeing the dry suit chaps get changed so quick post-dive while I struggle to get dry while its blowing a hoolie !
Mind you, although I'm in Dorset , I'm originally from up north so of course I'm made of hard stuff ;-)