Thanks for your quick reply.
That seems to have partly worked
Some radiators have warmed up on the first floor and one has got hot.
Radiators in the attic - one is hot and one warm.
On the ground floor the radiators have not warmed up at all.
A new boiler fitted about a year ago and all the radiators were working but those in the front were never as warm as those in the back.
Normal boiler and is a compression system with expansion vessel.
I have had a basement put in with underfloor heating which works fine.
The radiators in...
