I hope this is ok to post bit please feel free to remove if not. I just went on to the uniqlo site and they have special offers on at the moment on some of their uv protective tops if anyone else needs these. Picked up a heattech vest top for £3 as well for layering in the winter.
The long sleeved t shirts I'm wearing a lot at the moment under t shirts Etc - they are really lightweight so great for layering. Down to about £8 - takes a little while to check what sizes they have in which colours as the website is a bit of a pain but persevere.
Same with the hoodie tops - they are much lighter weight than they look and are down to just under £15 in various sizes and colours.
They won't replace the use of sunblock but add that little bit of extra protection which helps.
Easiest way to find them is to go to the search button at the top and search "uv" - hope it proves useful for someone