More than 275 financial firms are moving a combined $1.2 trillion (£925 billion) in assets and funds and thousands of staff from Britain to the European Union in readiness for Brexit at a cost of up to $4 billion, a report from a think tank said on Monday.

Banks, asset managers and insurers have already moved nearly £1 trillion of assets out of the UK and to other European countries ahead of Brexit, with more likely to be shifted in coming months, according to new research.

More than 275 financial firms are moving a combined $1.2 trillion in assets and funds and thousands of staff from Britain to the European Union in readiness for Brexit at a cost of up to $4 billion, a report from a think tank said on Monday.