riders

The company plans to welcome its first public riders in Las Vegas and San Francisco by the end of the year.

All other riders returned to the weighing room.

The big race is due off at 16:00 BST, with runners and riders negotiating 30 fences - including Becher's Brook, The Chair and Canal Turn - over four and a quarter miles.

Uber said that the fine print in its terms of use barred riders from joining mass lawsuits.

The first stage will kick off in Edinburgh, the Scottish capital, before riders make their way into England and then through Wales to finish in Cardiff, before returning to France.