In reply to dek:
Thanks dek, yup somewhat chilly in the morning, with bonus cold water running all over the holds, hence me not actually climbing
I had two T-shirts (the first a merino wool one), a hoodie fleece, softshell AND duvet jacket on. And hat, and "winter lined" Craghoppers trekking pants, and I was JUST warm enough. Everything brightened up at about 1.30pm when we were leaving!
We had bivvied on Holyhead too, which was cold for me (inadequate gear) and too warm for the others (over-the-top gear)