Taxes on British banks needed to be eased, the United Kingdom’s financial and professional services lobby said in a blueprint aimed at helping London unseat New York as the world's top international financial center within five years.

It also said the country needs to make it easier for lenders to hire staff from abroad.

The strategy paper on Tuesday from TheCityUK reiterated some ideas already aired in government-backed reports and elsewhere in recent months as the City of London looks to recoup ground lost following Britain's departure from the European Union.

"By some metrics, the U.K. is losing ground: London is currently slipping further behind New York each year while other centres are strengthening," the paper said.

The United States financial capital overtook London in 2018 in a leading annual survey, it said, adding that New York dominated in stock market listings.

"The U.K., therefore, needs to adopt a relentless focus on strengthening its international competitiveness to win back the prize of being the world's leading international financial centre," TheCityUK lobby group, which promotes the wider financial sector abroad, added in the paper.

Britain's departure from the European Union effectively closed London off from its biggest financial services customer, adding further pressure to catch up.

The finance ministry has already set out reforms to make London's capital market more competitive, and TheCityUK set a five-year target for London to "out-compete its rivals" by amending tax, visa and other rules.

Becoming the global hub for financial data, sustainability investing, investment and risk management will also be crucial in helping Britain overtake New York, TheCityUK said.

The total tax rate for a London bank is 46.5%, 13% higher than a New York-based bank, it added.

But persuading government to cut taxes on finance as it mends a hole in the economy from COVID-19 may be challenging, as will having an open door on hiring given the Brexit referendum pledged to crack down on high levels of international mobility.

The single most important issue for financial firms is being able to hire globally, TheCityUK CEO Miles Celic said.

"In conversations we have had with government, I think that is something that is absolutely understood," he told reporters.