Quids, thousands of people travel around the capital with their kids, including babies, on public transport - at least you don't have to fold the buggie up anymore on the bus like you used to. I did it with my first two who are only 16 months apart and had to juggle buggie, shopping and two small babies on the old fashioned buses. You adapt and develop strong arms! And now with my granddaughter I have found it so much easier to take her out on public transport than I ever did when my kids where small, even with bags of shopping. I also have a bike trailer to pull her around for short journeys and my daughter has a bike seat for her. Unless you are disabled, there is really no excuse for having a car in London, it is a luxury, not a necessity and if you ever do need to use a car occasionally, street car or 1car1 is a cheap way to do it, but you find that when you don't own a car, you get used to not needing one, so rarely rent one either.