100% Merino long sleeve base layer from £15-£18, and leggings at £13, although the site is slow and buggy for some reason, http://www.craghoppers.com/merino-half-zip-fleece.html
Usual caveats, I do not work for the company, but have purchased from them before.
Usual caveats, I do not work for the company, but have purchased from them before.