Cheers guys
Feeling a bit calmer now.
Police want to finger print car tomorrow so will drive to work with no glass in

as they don't want me to touch anything. Window guys coming out to work first thing too.
Door has scratches / marks on it from where the scum has lent in rubbed broken glass into the paintwork.

I'll need to give it a wash then assess. Black car with gravel rash on the top of the door is not a good look.
I'm sure I'll find lots of bits of glass for weeks to come.
Worst thing is that it was outside work so can't really park elsewhere. I'll see what the insurance company say - might just put the RCD310 back in. Will miss the unit if I do though and half of me is thinking the b4stards will have won. Have had the thought of changing the car to get one with a truly integrated stereo (I'll see sense soon!)
Could be worse - no one hurt.
One question, when the sh1ts plug it in will it have my details in it as in SatNav recent destinations and phone numbers? (I didn't save my home address in the Sat Nav)