Flavell Leisure Range Cooker 110?

My mum has the above gas oven and is finding it difficult to get someone to come and have a look what is wrong with it or repair it.
The problem is with both the ovens - the gas hobs work perfectly but the ovens are just not firing up or heating up. There is a little light but just doesn't fully ignite. Could you please advise on what part we need to repair and if it is possible to repair it.