If/while you still can, you might as well just walk (or take a bus, they're great)! London is a beautiful city, with myriad hidden wonders that you just don't find unless you're on foot.
I've found myself in countless situations where the walk is maybe 10-15 mins longer than any available public transport (Uber included), so I've saved myself the money and taken a hit on a little bit of time.
I've found myself in countless situations where the walk is maybe 10-15 mins longer than any available public transport (Uber included), so I've saved myself the money and taken a hit on a little bit of time.