Selector Belling Main Oven Function

Belling oven function selector switch, features 2 positions plus off, then freely rotates to 270 degrees. Fitted behind the main oven thermostat on these models:
BCC1100DFB, BCC1100DFSS, BCC900IB, BCC900ISS, BEL601ETCNZRED, BEL601ETWHITE, BEL60EDOBLUE, BEL60EDOGREEN, BEL60EDORED, BEL60EDOWHITE, BRD1100DFB, BRD900DFB, BRD900IB