Had a little look tonight, and couldn't work out which relay it was under the dash.
However, when i tried to put full beam on i could hear the relay clicking on the bulkhead, so simply unpluged it then reconected it and hey prest i have lights.

However on the way to my GF's they decided to go out on an unlit dual carrigeway! So i held the fullbeam stalk in the on place just to see where i wae going. When i let go, to change gear they came back on again.

I hate electrics Maybe i'll just have to clean the terminals next time.

Pull it apart and clean teh contacts. If you can get some electrical contact cleaner is great stuff.