Thanks for everyones help with this problem - there's obviously a variety of different fitments judging from the replies.
For my 55 plate, the private message 'Clutchdust' sent me fits the bill exactly and gives you all the info' you need.
Thought I'd share with you all for when you get the same problem (and according to local dealers, if you're using your own recorded discs, it will happen to you eventually!!
Thanks again Clutchdust.
Center console is easy to remove, lift the lid on the cubby box and take out 4 screws, remove the tray complete with lid, with that out of the way, you'll see 2 silver screws that hold the rear of the console to the floor, remove them, then flip up the plastic cover directly below the hand brake lever, loosen but don't remove the screws, unplug any switches and wiggle the rear half out.
front half....... remove 2 torx screws either side of the gear lever on the side of the console, above the radio is a cover, put a srewdriver in the slot on top and lever the cover backwards, remove the 2 screws once the cover is out, pull up the gear lever gaiter and unplug the hdc switch, pull the console back and unplug the switches and ciggy lighter, lift out of the way, remove 4 screws and take the radio out.
to get the cd out, remove the top cover of the radio, if you're lucky, it'll come out but sometimes they break.