Mate you can get a 120gb crucial m4 for £65ish. Think on aria they had ocz ones for a similar price.
Only need 15gb or so for the install so just got the cheapest one I could find, ended up being a 64gb OCZ from PC World.
I'm having a nightmare moving the partition across. Turns out the mechanical had unreadable sectors so clonezilla just craps out. I've tried all sorts of linux disk repair utils to no avail. Now I'm trying to copy the partition in gparted to the new drive and pressing ignore on the bad bits. No idea if that will copy the full mbr and allow it to boot, or if the resulting image will be flakey because of the missed blocks. Who knows! What I do know is that I dont want to have to set it all up again, there just isnt time now I've got the little one.