All the years I`ve lived in Brighton, not once have I heard of them but just looking at reviews online they get a great thumbs up.
If you are in Brighton, no need to look any further than MPB.
I've had dealings with the owner a few times, all totally sound. I had a Canon 80D from them that I still have now.
I believe it's the same chap running it now.
Thanks. Thats good to know as I have taken the plunge and I am now in the process of part exchanging a camera.