As you can see from the helpful responses, there are garages in London who could help you. At this point in time neither us on the forum nor yourself, know the extent of the oil leak and where its coming from. It would help you to learn about your van and identify your issue before speaking to an 'expert'. Perhaps you would post up a few pics of your oil leak(s) and the experts on here could give you lots of help and advice. Searching the forum is always useful as most owners have had engine oil leaks at some time. These old engines do tend to leak a bit of oil and yours may just be a tiny leak which has spread out over time. Usual advice is to clean the oil off your engine, then run it up and look for any obvious leaks.
This /\/\/\ .... and find out where people on here live in case they can clap eyes on your bus in person .... over a can of [fill this space yourself] Hi from wind swept Gloucestershire PS ... "Crossdresser" is just one example of those bored and naughty moderators' having a bit of fun .... along with "Marmite" "*****ing" and "orange" for example, none of which are what I just typed as that would be me on the naughty step otherwise
