Lloyds' promise of a seamless separation of the TSB brand came unstuck this morning as the bank's Website crashed under the weight of traffic.
Five million Lloyds customers are seeing their accounts moved to the newly-launched TSB as the group fulfills its obligations to slim down the bank to ward off EU competition concerns.
Some 631 branches of Lloyds Banking Group, including all of the Cheltenham and Gloucester branches and all Lloyds branches in Scotland, have been switched to the standalone TSB.
Lloyds chairman António Horta-Osório, had promised a "seamless" transition for customers as the TSB brand was restored to the high street and a new stand-alone Web site was launched.
The early morning problems at TSB also extended to Lloyds' own Web pages, as customers vented their anger over the downtime on Twitter and other social media sites.
Both sites were back up by mid-morning, although some customers appeared distinctly unimpressed by the new-look TSB site: