Services firm TMF Group is set to announce a £1bn float on the London Stock Exchange this week, shunning a listing in Amsterdam in favour of the City.
The business services firm could announce its IPO as early as tomorrow.
The float, which could raise as much as £200m or more, will be the third biggest London IPO this year after Allied Irish Banks and Charter Court Financial Services.
The company, which provides tax, admin and legal support services, already boasts more than half of all FTSE 100 companies as clients.
TMF is headquartered in Amsterdam, and was reportedly considering listing on the Dutch market but its private equity owner DH has now settled on London.
It is thought the complexity of Brexit will provide opportunities for the company as firms turn to its services for extra support.
The firm employs more than 7,000 people, and has more than 50,000 clients. City A.M. understands that around 80 per cent of TMF's business is predictable at the start of every year, because its services are necessary rather than discretionary.
TMF's biggest client accounts for just one per cent of revenue.
Goldman Sachs and HSBC were leading advisors on the deal, with a syndicate of other banks.
The float had been rumoured as early as May this year but is now likely to be confirmed tomorrow.