han
love is the answer
You are a Londoner, aren't you? Have you factored in Ulez? Van needs to be 2014-16 to be Ulez compliant if it is diesel.
Unless you have a filter fitted to make it compliant. I have a 1996 Toyota Hiace camper (diesel) and got a particulate filter fitted about 10 years ago when the LEZ came in. Anyone who still has an old diesel van in London has one. They're not cheap though, but they're much much cheaper than buy a new van.