Sorry to hear that news Autofly. The sad reality (although, good news from your security point of view) is that the scum that stole your stuff will probably just throw your license and log book in the bin - they'll only be interested in things that they can flog quickly and easily - i.e. Headset, GPS, Flight Bag itself etc.
It might be worth, however, sending a flyer to all of the clubs in your area & beyond asking people to keep an eye out for your stuff. . .
As to the hours, you can get an Affidavit done (it's fairly inexpensive - less than £10 if memory serves - although how much the CAA will want, I don't know).
Once again, really saddened to hear your news
G