Leisure Roma 100 cooker?

Hi, My cooker has been working fine, but it will now not work on the left hand side, the two hobs, the grill and the fan over do not work. The middle ring will also only come on in the small ring.

Any ideas, I first thought it might be something to do with the clock, but surely this would not affect all of the left hand side. Ive not had it long and its second hand but only two years old.