Until Sunday (28 October), First Direct customers who hail one of 30 First Direct-branded cabs can travel anywhere in Zones 1 and 2 with no charge.
The offer marks the end of a campaign for First Direct which has seen the cabs carrying megaside advertising for two months.
Andrew Barnett, Ubiquitous managing director, said: “Working with First Direct we have created a much more experiential campaign, not forgetting our unique relationship with our very own brand ambassadors - the cabbies.”