Following completion of a new kitchen extension I am converting part of the old kitchen into a new shower room. This is to include electric underfloor heating. The area of the shower room contains a, now redundant, cooker point fed from a dedicated circuit from the CCU and protected by a 40a MCB. It would be convenient to use this redundant cooker circuit to power the electric underfloor heating together with an electric towel rail. Is this feasible and what, if any, alterations might be required to the circuit. Presumably the MCB would need to be changed to one with a lower rating. Also the cable within the shower room might need to be extended via a junction box – would this need to be done with cable to match the existing 6mm2 cable? The area to be covered by the underfloor heating cables is 2.33m2.