You need a gsr in to look at your oven. We cannot and will not give advice on the repair of gas appliances for your own safety.
Please go to Gas Safe Register | Ensure your gas engineer is registered. or post a thread in the 'I'm looking for a plumber / gas engineer' section of these forums remembering to include your location. I'm looking for a Plumber or Gas Engineer
If you are gsr please increase your post count to 10+ then send a pm to either Gas man or Redsaw who will then check you and then give you access to the gsr private forum.
Thank you.
http://www.ukplumbersforums.co.uk/ce...ed-advice.html (notice gas safety related advice)