The cops wont be interested, they will be out chasing down innocent motorists instead of getting the fucking thiefs and mugs who walk the streets.

What i would do is get extra security lights for the future, but in the mean time i would take the night off work and like Stu said, sit up with a few mates with the lights off ( be sure none of your mates likes to take it up the poop cutter or they could get a bit of touchy feely going in the dark ) and wait for the fucker to come back.

You might want to purchase some fox traps or something, anything that will make him not come back again. Alternatively, you could try and capture the thieving bastard and tie him up to a lamp post with a sign saying something like "i am a house breaking, thieving scum bag"...then phone the cops on him, but make sure you display him for a while and let neighbors and potential victims of house breaking see him, another idea could be to get a trialer and parade him around the streets for a bit...

I dont know, those might be a bit childish but, the fuck witt would deserve it.