Hi all thanks for all the replies , just an update on my vertical rads not heating up . What i had to do was fill up 1 vertical rad with a garden hose through the bleed valve port as I did so air started to bleed through the bleed valve on the other 2 vertical rads, when the water came out i closed the valves , took out the hose as quickly as possible to keep as much water in the rad screwed in the bleed plug and good to go ,all rads heating up just have to be balanced now. There was 2 of us doing the job not just myself. Thanks for all your replies hope this helps someone in the future.