Desperately seeking transport... van / estate car / something.

I need to return a large flatpack unit to Ikea in Edmonton (North London) and exchange it for one that's the right colour. It cost me 50 quid to buy the unit, so hiring a 50 quid van to return it is really going to piss me off. Does anyone have a van, people carrier, estate with a roofrack, something that could get a 2.5m long and very heavy bit of flatpacked furniture to North London? If so, please please please would you do me a huge favour and help me sort this bloody thing out? I need to return it by the end of this month or else I'm out of luck.

I am of course more than happy to cover petrol money, and buy you a drink/meal/something.