We have only one day left in London and I had reserved tomorrow, Saturday for touring around London highlights. Unfortunately, the person who was supposed to take us couldn't anymore due to some circumstances beyond their control. I still want to tour around London tomorrow as I already told my kids that's what we're doing on Saturday. I have emailed all the taxi tour drivers and hasn't gotten any responds back and I'm beginning to think that it's too late to get a taxi for tomorrow. Anyone has any suggestions. Don't care what time tomorrow as long as it's tomorrow.