Trainline shares tumble amid warnings over expansion of London contactless zone

Ticket website also cites economic uncertainty denting foreign travel and Labour’s plan for UK rail booking system

The online rail ticket retailer Trainline has warned of “headwinds”, including the expansion of London’s contactless travel zone and economic uncertainty denting foreign travel.

Shares in the London-listed company tumbled by as much as 8% during early trading on Wednesday, despite reporting surging profits for the year to 28 February.