Britain will set out reforms on Friday to ease bank capital rules, one of 30 measures the government says will unlock investment and secure its position as the world's "foremost financial centre".
"Leaving the EU gives us a golden opportunity to reshape our regulatory regime and unleash the full potential of our formidable financial services sector," finance minister Jeremy Hunt said in a statement on Thursday ahead of the announcement.
The reforms which Hunt said will "turbocharge" growth in the face of recession and a cost of living crisis, take advantage of Britain's European Union exit to tailor its own rules.
Now dubbed the "Edinburgh Reforms", the proposed reset had been trailed as "Big Bang 2.0", a reference to the 1980s share trading overhaul, raising expectations of a big deregulatory push which left banks fearing costly systems changes.
Britain's Finance Ministry said on Thursday it wants proportionate rules based on best international practice that balance burden on business with protection for consumers.
The reforms include releasing banks without major investment activities from rules requiring them to "ringfence" their retail arms with a bespoke cushion of capital, it said. They follow recommendations from a government-backed review.
Banks have lobbied to either scrap the rule or significantly raise the deposits threshold which triggers the requirement.
There will be a plan to "rigorously review, repeal and replace" EU regulations ranging from disclosure for financial products, listing requirements and prudential rules for banks.