UK retail bank Barclays said inhabitants of London sent £60 million via its Pingit P2P money service in the first half of 2014.

One in four users of Pingit, in which money is sent and received by exchanging mobile numbers (rather than sharing account details), are based in London, the bank said.

Meanwhile the bank is promoting the service with a London cabbie who it said has agreed to only accept payments via Pingit for five days.

According to the bank’s announcement, he agreed to go “cash-free, mobile-only” for that period (actually, the fine print says he is informing potential passengers about the app and, actually, offers the option for them to pay by cash or card).

The cabbie is making use of the ‘buy it’ feature on the Pingit app which enables passengers to make payment by scanning a QR code in the cab.

Any user can download the Pingit app, not just Barclays account holders.

Since it launched in February 2012, Pingit has been downloaded three million times and the total amount sent using the app is £540 million.

Users in London have sent a total amount of £130 million via the app since launch.

Separately, Pingit is now available for users of Windows Phone 8 phones, in addition to the iPhone, Android and BlackBerry phones on which it can already be used.

Earlier this year, the bank said it was testing a Windows Phone version of the app but no commercial launch actually materialised.

And, according to a Phonearena.com report earlier this year, the bank was talking up a Windows Phone version back in 2013.