Well Friday was a hectic day, but pretty much everything sorted now.
All the house locks changed, which wasnt as big as a hassle as id originally though, and got into VW in the afternoon to get the key recoded. Only cost 33 quid which was a pleasent suprise. So they key will still work but the engine wont start and alarm will go of.
New locks ordered and should be fitted on Monday, and cctv fitted in the house with new sensor lights etc.
Luckily my Key insurance is separate and wont effect my no claims, so going through them.
Thanks for all the help, doesn't appear the scumbags have came back anyhow, so thinking they've probably ditched the keys.