What are some approved companies for London tours?

* Golden Tours

* Big Bus Tours

* The Original Tour

* London Walks

* Tootbus

* Evans Evans

* City Cruises

* Thames River Services

* West End Musical Tours

* Harry Potter Tours

These companies offer a variety of tours and experiences, including sightseeing trips, walking tours, boat trips and themed tours. All approved companies are regulated and adhere to strict safety standards and quality controls to ensure you have an enjoyable and safe experience.