yes the water in the loft is full. Turned out there was an air blockage at the shower. I cleared that and everything working except the hot water at the sink. Plenty in the bath, but not the sink.
Yesterday i had no cold water at all in my bathroom. The hot water was working in the bath but not the sink and the toilet wouldnt refill after flushing. I attached a hose to the cold water and forced water into the system ( which is oil fired ch with feeder tank in loft and cylinder beside bathroom...