Atom Bank Chief Has 'No Regrets' on 4-Day Week, Urges Rivals to 'Grow Up' and Follow Suit

• Atom Bank boss has 'no regrets' about switching to 4-day week in 2021, says metrics like costs, productivity, sickness have improved

• Mullen claims legacy banks promote 'cultural presenteeism', says they should 'grow up' and not force staff back to offices

• Mullen focuses on using technology like chatbots to serve customers efficiently with fewer staff, allowing 4-day week

• Atom growing slower than rivals like Monzo and Starling, but Mullen says it has 'unlimited' growth potential in huge UK mortgage market

• Mullen won't IPO Atom until geopolitical tensions ease, wants 'dull socio-political environment' before listing