Aeronautical information circulars can be found here:
http://www.ais.org.uk/Uk_aip/AIP/html/aicdata.htm
Plenty of other useful stuff on the ais website, and also the Caa SRG site at
www.srg.caa.co.uk
Will be worth your while spending quite a bit of time in becoming familiar with these resources.
As an extra...
Why not try the Trevor Thom JAR PPL book? It is twenty quid or thereabouts, but also contains the Meteorology text. The benefit to you is that the text is written around the required knowledge for the JAR PPL written exams. Very straightforward.
Good luck
JH