A regular occurrence in London, when asking for a fare receipt, is an offer of a couple of unsigned receipts or an offer to put any figure down. The taxi driver keeps no duplicate record of the transaction. This deprives the taxman of the cab driver’s tax and encourages the customer to cheat their employer and HM Revenue & Customs. This conspiracy to defraud has been going on for decades.
An Uber receipt clearly states the origin and destination of a journey and the price paid. This eliminates fraud. As an employer I trust an Uber receipt, but view a licensed taxi receipt with suspicion.