I highly recommend Saunderson Property... I think I summed up my experience with them well in an email I sent to Peter recently:

"I also want to thank you for being such an excellent reference for me during the process of finding somewhere bigger to live. I appreciate it very much.

On a personal note, you have been a pleasure to deal with this past year, and I am wholeheartedly sorry to lose you as my property manager. I felt you treated me as a person, and not just another number, for this I thank you. And so if there's anything I can do to help with the re-leasing of the flat I'd be happy to help."