When I enquired at ashbys it was around £40. When I checked the wiring I found that a connector had corroded and the live was arcing to the earth. New connector and some insulation tape for good measure saw the element working perfectly again. Cost £2. Worthing checking the wiring first. Also could be thermostat think that was about a tenner. Give ashbys a call they are very helpful and gave me instructions how to test element / thermostat and replace.