Had some new shifters fitted last week, New Brake Cables new Gear Cables all fitted, took the bike out for a tweak run got everything hunky dory. couple of days later i noticed my rear break was sticking, caliper was a bit mucky so got the wifes toothbrush gave the caliper a good clean, still sticking, i noticed when i pulled the cable on the top tube the brake worked fine but when i pulled the brake lever it stuck, FEK frayed cable thought I. went to remove my lights to strip down the bars when i noticed the light bracket was clamoing the brake cable took the light off, brake worked perfectly. lesson learned : Pay attention when putting your lights back on