Price of private guitar lessons?

[motherforceawakens]

Does anybody know how much we should expect to pay for a 1/2 hour lesson? We're in London.
Thanks

Piano would be £11 to £20 for 30 minsso I'm guessing about the same.

We paid £19 for half an hour, teacher came to the house too. SE but not London.

Upwards of £20 per half hour for a conservatoire graduate.

Thanks all! That's very helpful.