Worth having a look at the RAF published charts from no. 1 AIDU (
www.aidu.mod.uk). Website is a nightmare but you should be able to get booklets of approach charts updated quarterly for £14 or so each (two are needed to cover England and Wales, for example). They are basically AERAD charts plus some RAF specific ones.
If you actually got all three UK booklets 4 times a year (4 x 3 x 14 = £168) you are at the same price as an AERAD subscription (that must be deliberate), but e.g. I have the two England & Wales ones quarterly which saves me a bit, and I need the RAF charts (I fly from an RAF club) which are not in AERAD.
Tim