Where to buy D2x charger in London?

[Rocha 0]

Hi everyone, quick (and urgent) question, I am packing for a trip tomorrow and just realized I lost my D2x charger. Spent the entire day looking, just gave up now. My house is a complete mess as I just moved a couple of days ago, so that explains why I can't find it.

 

Anyhow, luckly I will be spending the day in London this Sunday because of a crazy long flight layover. So, can anybody tell me where to buy, preferrably a used D2x charger? I will be in Heathrow airport but can take the subway to town.

 

Thanks!