The gauge was just displaying at 1ish, and when I was removing air from rad no actual air came out but water came out immediately. Could it have been because I initially had the rads near the top of the flow turned off to ensure heat was reaching furthest rads as per advice from British Gas...
Sorry in advance as new to forum. I am having a problem with my central heating at moment as trying to balance the radiators in prep for winter.
I have a normal central heating system with Potterton boiler downstairs in the garage, hot water cylinder in my sons bedroom where the airing cupboard...