Thats all been done. All the shower components were removed, shower head, module, thermostat etc and all filters cleaned.
Same thing on the shower below on the first floor.
The basins are fine on both floor, its just the showers. There was loads of crap like ptf tape, joining compound, grout etc which came out. Also the water was left running for about 10-15mins without the filters.
Will now have to back track all the 22mm pipe back to the megaflow to see where the problem lies.
Thought it might be easier by flushing the pipes with some sort of high pressure
Your right about the non-existent plumbers. The plumber I had, took on all the plumbing job on, then have way when it got too difficult done a runner.
The 2nd plumber said its his bread and butter...........look at the problems Im having know, they get to go home without a conscience, im the one left standing with all the dilemmas