Tokyo Sightseeing tours by Hato BUS

Hato Bus(English page)

They provide english tours.
Half day, Full day, Walking tour and Night tour, they have.
You can send booking request from web.

If you want to walk with guide in Akihabara, I recommend it.
TOKYO WALKING TOUR -NOW AND THEN-

If you want to walk with guide in Tsukiji fish market, I recommend it.
FULL DAY EDO-TOKYO (by public transportation)

Please look at web about details.