TSB faces wave of complaints after botched IT upgrade

As a part of its split from Lloyds, over the weekend the challenger bank migrated clients and their data to its own online platform from Lloyds's, a process it said had been successfully carried out.

However, come Sunday evening some clients were unable to access certain online banking services, leading the lender to shutdown its digital services for a few hours after that.

Of 5m TSB customers, thousands were left unable to log-on to use their banking services during the upgrade and on Monday some customers were still reporting problems accessing the platform.

One customer also complained that he could see other clients' accounts and yet another said he had been wrongly credited with money that wasn’t his.

Some of those same customers took to social media to say they were proceeding to shut down their accounts and that they had lost all trust in TSB.

TSB apologised to customers for the "intermittent problems", promising that the platform would be up and running as soon as possible, blaming access issues to heavy traffic as clients logged-on to the new services after the weekend.

A spokesperson for TSB said: "We are currently experiencing large volumes of customers accessing our mobile app and internet banking, which is leading to some intermittent issues with people accessing our services. We are really sorry for the inconvenience this is causing our customers and want them to know we are working as hard and as fast as we can to resolve this problem."