We're going to be in London in early April of next year and we're looking at taking a bus, or maybe even a taxi, from somewhere around Victoria Station through the parks and such to the west of there just to see a part of London that we won't otherwise likely spend a lot of time in, excepting a visit to the Natural History Museum. Day of the week is TBD, but most likely a Sunday. Will traffic in this area be bad enough during the hours of 12:00-ish to 19:00-ish that the bus would drag too much or that would drive the cost of a taxi "too high" for the territory covered? We've already decided a HoHo wouldn't be a good bet--thanks to earlier advice from y'all.
Also, any recommendations for eating around Victoria Station or the NHM. We're generally interested in "traditional British" (but not a big roast dinner), Indian (also traditional Brit, no?), and Middle Eastern and Asian type foods. No Italian (plenty of that in the US, even at home) and no French since we'll be coming from a few days in Paris. Not to worry about cost--we can figure what fits our budget via a Google search.