Taxify's suspension comes at the behest of TfL, which asked the company to cease all rides: "The law requires private hire bookings to be taken by licensed private hire operators at a licensed premises, with appropriate record keeping," said a TfL spokesperson. "Taxify is not a licensed private hire operator and is not licensed to accept private hire bookings in London. TfL has instructed Taxify to stop accepting bookings and it has done so."

While Taxify doesn't hold a licence itself, CEO Markus Villig told media that the company operates as a "technology platform," which sources rides for an existing ride-hailing operator called City Drive Services. Taxify purchased City Drive Services, allowing it to piggyback on the London-based firm's licence (which expires in 2019).

In a statement, Taxify said it had accumulated over 30,000 customers and added 3,000 drivers since it launched, adding: "Taxify is a technological platform for customers to hail rides from City Drive Services, a licensed London based private hire company. This has been raised as a concern by TfL and in full cooperation, Taxify have temporarily stopped operations to clarify its legal position with the regulator and reach a resolution so that services can return to normal."

"TfL have a responsibility to Londoners to make sure there is a competitive ride-hailing market in the capital that strengthens incentives for operators to improve quality and safety while also bringing the overall cost down for customers. Taxify's model does just this having achieved significant breakthroughs in over 19 markets around the world, and we look forward to an open and transparent dialogue with TfL in the coming days to resolve this."

In a letter to Transport for London and London's deputy mayor for transport, GMB union secretary Steve Garelick called Taxify's acquisition tactics into question, noting that the company's decision not to advise TfL of a change to licencing conditions appeared "incompatible with the law."

It's now Transport for London's job to identify whether Taxify's decision to trade under a subsidiary's licence is against the rules, which could see the company keep its drivers off the road indefinitely.