You can get all the current charts for the UK from the ais website. Its the offical plates that all the jeppys etc are made from. Just register and then you will have the same access everyone else has. Most European countrys have the same set up with on line access to the plates it just takes a bit of time looking for them.
If you want some more of the larger european airports and on route charts on paper. Jeppys do a book of out of date plates for using studying for ATPL ground exams. Transair should have them.
And a post in wannbies might get you a cheap set before getting deleted.
To be honest its not a case of security or anything like that. The plates are on public distribution with no checks. Its more of a case of the bloke that does the up dates has no need of them and if an out of date plate turns up in an aircraft on a CAA check there is major noises. So they get chucked in the bin as fast as possible so no cock ups occur.
MJ