I'm not up on valuing domain names by any means, but Ash's reply is helpful. He's been good enough to enter the den.
I am surprised that Ash reckons the britishpubguide.co.uk is worth as much as he says (low to mid £x,xxxs). To back Ash's view, though, both the .com and the .co.uk were regged in 1999, so someone back then thought they were of value and have held on to them. (Mind you, a lot of junk was regged back then and is still being held on to ... I have one or two myself
)
As for securedloan.co.uk, I would have thought that this was only £x,xxxs at the most. If it was unsecuredloan.co.uk, then perhaps it could top the £xx,xxxs.
All in all, I am surprised at the higher than expected value of these domains.
Cheers, Luke