1st repair was done, new light bulb and replaced element engineer was prompt and pleasant, the on first use worked for 15 minutes and then the bulb stopped working again and the over stopped heating, tripping the electrical supply, emailed office explained the problem and an engineer came out and now believes the problem is a thermostat and the bulb holder not bulb, also suggested we replace the settings switch as this is stiff! None of these parts are stocked so had to order, and now been told the bulb holder is a discontinued part with no optional replacement which seems strange as it’s a fairly generic item? I also had to chase the office for information once second engineer had left at which point I was told about replacement costs and asked to pay upfront for spares, no appointment has yet been offered to fit so l will review the outcome once completed