Marion King has overseen one transformation of Voca, the company that processes most of the salaries, bills and benefit payments in the UK. Now the chief executive is taking it through another as it prepares for the advent of a pan-European payment system.

Voca processes 90 per cent of UK salaries, 70 per cent of household bills and most state benefit and pension payments, handling 6bn transactions a year. On some days it handles as much as 77m payments, worth €45bn (£29.7bn).