We did the love London tour because we had already seen many if the classic sites. It was a very hot day but the guide did a good job of stopping in the shade and not going too fast. The guide was from the Netherlands but I can’t remember his exact name (Janis maybe). Anyway he was very knowledgeable and had a relaxed style which I liked. The traffic was bad in parts but the guide kept us all together and safe, which can be tricky when you have a group with kids.