Thanks for your replies guys, I realise now I'm in the wrong totally, it's all my fault I should have more knowledge of c/heating systems and be more aware of how these work before engaging an engineer so I can tell him exactly what I want doing. I'll take your advice and put the cheque in the post tomorrow, with a £100 tip on top, be eternally grateful for the work that has been done and be most humbled that at least I have heat from all the other rads. I'll put an old parafin heater in the bathroom to take the chill off and thank God that I at least I had somebody that was prepared to lower themselves to even consider doing the work for such a slime-ball as me. I now know my place in the food chain, right at the bottom.