We live in a rented house so I will contact the landlord but any ideas in the meantime, even if I put the radiators on 0 they are still hot. There is no thermostat other than on the radiators themselves. The control on the boiler is broken and set to almost max (waiting on quote for repair) so it can get really hot, particularly upstairs but downstairs can be chilly due to drafts and bare floorboards. I am going to try turning up to max incase the control is reversed somehow.