In reply to greycarsdave:
I have a t-shirt that I have been very happy with, only cost a tenner in the Sale, but the boxers have been awful-holes aplenty in the buttock area where the material has gotten thin.
TK Maxx have Red Ram Icebreaker tops going for £20, and also some Aussie brand, but I cannot remember the brand.
If you don't mind waiting a while for delivery, Sports Pursuit have some cracking merino deals. I got some Janus (Norwegian, I think) boxers that I am very happy with.