Ok [MENTION=27939]Zukey Seagull[/MENTION], I'll do the hard yards, as I've top up my bike porn on [MENTION=2551]Stoichkov[/MENTION]'s Bottecchia.
This search typifies the problem of your remit, esp if you have a mountain bike already, and the £250 is immovable:-
http://www.bikeradar.com/gear/article/best-cheap-hybrid-bikes-39802/
The Carrera's would appear to be out, as you might as well just change the tyres on the bike you already have.
Nobody here will tell you to go bike shopping in Tesco or Argos.
A trip to Evans, I assume Gatwick carries more and varied stock, may well be better:-
http://www.evanscycles.com/categories/bikes/hybrid-bikes/f/unisex#!!sort=asc
As I thought you're not going to get close to a new cyclo-cross bike, on your budget, it's a little to niche-y:-
http://www.evanscycles.com/categori...es#!!price_from=;price_to=;on_sale=;sort=asc;
Although saying that I think Halfords might do a cheap one.
Wiggle have even less on offer:-
http://www.wiggle.co.uk/unisex/cycl...i=270&ma=380&omi=270&oma=1500&cc=GBP&cr=1&o=2
As [MENTION=12656]Pantani[/MENTION] says a shift in your budget would help, or perhaps there's better value down the ebay/gumtree/FridayAd route.
This search typifies the problem of your remit, esp if you have a mountain bike already, and the £250 is immovable:-
http://www.bikeradar.com/gear/article/best-cheap-hybrid-bikes-39802/
The Carrera's would appear to be out, as you might as well just change the tyres on the bike you already have.
Nobody here will tell you to go bike shopping in Tesco or Argos.
A trip to Evans, I assume Gatwick carries more and varied stock, may well be better:-
http://www.evanscycles.com/categories/bikes/hybrid-bikes/f/unisex#!!sort=asc
As I thought you're not going to get close to a new cyclo-cross bike, on your budget, it's a little to niche-y:-
http://www.evanscycles.com/categori...es#!!price_from=;price_to=;on_sale=;sort=asc;
Although saying that I think Halfords might do a cheap one.
Wiggle have even less on offer:-
http://www.wiggle.co.uk/unisex/cycl...i=270&ma=380&omi=270&oma=1500&cc=GBP&cr=1&o=2
As [MENTION=12656]Pantani[/MENTION] says a shift in your budget would help, or perhaps there's better value down the ebay/gumtree/FridayAd route.