Lloyds Banking Group websites, including the new standalone TSB site, have been hit by problems on TSB launch day.
In what could be a classic case of poor or failed business continuity planning, the banking group experienced intermittent website problems across almost all of its brands.
The problems coincide with the transfer of five million customer accounts from Lloyds to TSB, despite promises by Lloyds chief executive Antonio Horta-Osorio of a "seamless" transition.
According to the banking group, it experienced a “temporary issue” with its internet banking service, which affected the ability of some customers to log on.
“The issue is now completely resolved and we apologise to customers for the inconvenience this will have caused. Our branches, telephone banking and cashpoints were not affected in any way,” the group said in a statement.
A spokesman declined to comment further or respond to questions about whether the website outages were related to the TSB launch or not.