Bike fitting - best places?

arranj Posts: 66
edited July 2013 in Road beginners
I got my road bike last weekend, a Triban from Decathlon. The guy there didn't really seem to interested in getting it fit for me, just basically wanted to adjust saddle height and nothing else.

As such although it feels comfortable enough at the moment, I'm not 100% confident that as I increase my distance I am going to stay comfortable.

I'm looking to get some sort of professional fit, and appreciate it can be costly but trying to keep the costs low.

I'm looking for somewhere near Sutton in Surrey, Pearsons does do it but it's about £120...!!!

Any info appreciated.