If it is a circular element around the fan at the back of the oven you will find that most of the manufacturers use the same 2.5kw unit.
Log on to 'www.espares.co.uk/parts?k=creda+element'
The third element down is probably yours, but click on the link 'models this fits' to try and track yours down.
For a better picture and description click on the 'more info' button