Well, I was really referring to private hires here, given Uber Britannia operate as a private hire company, and private hires don't have any such requirement an

Well, I was really referring to private hires here, given Uber Britannia operate as a private hire company, and private hires don't have any such requirement anywhere in the UK. Another difference taxis tend to have specific whitelisted vehicles (hence the iconic image of a black hackney cab), whereas private hires generally just need to meet some list of requirements (typically something along the lines of having at least four doors, seating at least four, etc.).