I found excellent reviews on Gren tours on tripadvisor, so I decided to book it, as I was planning a school trip for my high school students.
I sent an email, and got an immediate response from Glen, and not only did he confirm, but he also offered to meet us where we were staying.
The night before the tour, Glen called to confirm (a gesture much appreciated!), and the following day he was waiting for us in the reception, 5 minutes before the agreed meeting time! Talk about first impression!!
the tour itself was really good, saw places we would've never have on our own, got valuable information in a very interesting way. Glen had a portfolio, and showed different pictures while explaining...
All in all, it was fantastic, the students loved the tour (and they are very picky!), it was informative as well as fun!
and not only that, but Glen was very helpful with extra information on other things we wanted to do.
the only downside though, if you book a half-day tour, then expect a full 4-hour tour!! meaning no stops, no breaks!! which i don't mind personally, but the students were exhausted and hungry at some point!! so, if you'll need a break in the middle, make sure you tell Glen.
But other than that, thank you Glen for the wonderful tour, the information and the help!
I'd definitely recommend this tour to anyone visiting London!!
This review is the subjective opinion of a TripAdvisor member and not of TripAdvisor LLC