I used to be an avid follower of CHERUB but I stopped just after I read the first Henderson's boys.I can't get so into them now but at the time when I was about 15 they were amazing
By the way I'm convinced that CHERUB stands for "charles henderson's espionage research unit boys"-Has any more information come up on this in the books?
Proof that L-Space exists in this universe
Fact 1:Heavier things distort time and space more
Fact 2:A page with ink on it is heavier than an unprinted page
Conclusion:A book distorts time and space more than blank papers