Saw this in a couple of lincolnshire stores, so i assume it national.
Brilliant Stuff, perfect for cleaning keyboards/ mobile phones, and lasts surprisingly long. Next nearest is £5.86 @ Play.
'If you look down at your keyboard, you'll probably notice that it can get a bit... gunky. And the same goes for joypads, phones, TV remotes, MP3 players - anything that sees a lot of use can get pretty mucky pretty quickly.
Cyber Clean is a new formula, a little bit like Silly Putty, that is safe to use with electronics and delicate equipment, and will stretch into hard-to reach areas, pulling out dirt without getting stuck. It's also anti-bacterial and doesn't stain, so you can use it without worrying about what's left behind. And even better, it's biodegradable, so once it reaches the end of it's lifespan you can throw it away without worrying.'