Having added bit about the London Film Office I thought it may be useful to have a list of other such organisations in one place.

Bristol Film Office
Glasgow Film Office
Kent Film Office
West London Film Office
Southwark Film Office

I will add to this as I go along. Recommendations of any particular office are welcome

Mike was recommended to me when I was looking for someone to repair a Sony ECM77 mic. Not only did he do a great job but his prices are good and the mic was back with me 3 days after I had sent it to him.

His website isn't quite up to his service standards but it does the job:

http://www.mikesfilmsound.com/

Link: http://www.filmoffice.co.uk/

Film office is for permits to film in London. If you have any experience of getting permits in other towns/cities around the UK please post them here.