Get your facts correct,Our overall services (including Financial) is 80% of UK GDP and again its about 44% from Europe
6.5%
In 2017, the financial services sector contributed £119 billion to the UK economy, 6.5% of total economic output. The sector was largest in London, where 50% of the sector's output was generated. The UK financial services sector was the eighth largest in the OECD in 2016 by its proportion of national economic output.25 Apr 2018