"We have got to get it right," Griffith told parliament's Treasury Select Committee, adding that being right was more important than being first given the UK's "strong financial reputation".

"It will be a long lead-time activity," Griffith said. A public consultation on the attributes of a digital pound would be launched in coming weeks, though without a final decision on whether to push ahead with one.

(Reporting by Huw Jones; Editing by Alison Williams)