The bank hired agency Rufus Leonard to redesign its mobile app but one of the early drafts showed a picture of a bank card with identifying numbers belonging to Monzo, the UK-based mobile-only bank.
Somehow it was seen by Monzo’s chief executive Tom Blomfield, who posted a photo of it and tweeted: “Hey Halifax, it’s great to see your updated brand identity, but it looks like you forgot to update couple of things.
“The card in the photo still displays the Monzo BIN [Bank Identification Number] (5355 22) and the name of one of our staff members…”
Some Twitter users also noticed the “budget wheel” in the other picture bore a striking resemblance to one used by Starling Bank.
In response, Rufus Leonard said in a tweet: “Well this is embarrassing. This is an early stage mock-up we proposed to Halifax but they rejected it.
“The new Halifax app design is coming soon.”
A Halifax spokesperson said: “This is one of many early mock-ups of a potential redesign of the Halifax app, but one we’re not going to use.
“We look forward to revealing our new look app soon.
“Halifax brand redesign is rolling out to customers throughout this year.
“Our design agency have apologised to us for the inadvertent release of one of their concept images, but we have told them ‘no harm done’.”