Rail ticketing firm Trainline , which has a major base in Edinburgh, is looking at a £1.68 billion valuation when it floats on the stock market.
Its shares will be priced at 350p, at the top end of the range initially quoted.
The firm is floating 56.5% of its business, in a move which will raise around £950 million from the sale of existing shares and £110 million from the issue of new ones.
Edinburgh-based fund manager Baillie Gifford will be one of the largest shareholders.
Trainline chief executive Clare Gilmartin said: “We are delighted to be starting life as a public company on the London Stock Exchange. This is an incredibly exciting achievement for all of us at Trainline. I am extremely proud of our Trainline team and I want to thank every one of them for the role they have played in growing the company to become the leading independent rail and coach travel platform globally.
“We believe we are uniquely positioned to capitalise on the vast opportunity ahead and accelerate our expansion for the benefit of our customers, our train and coach company partners and our shareholders.”
Conditional dealings in shares started this morning with full trading getting under way next Wednesday.
Trainline is currently owned by US private equity house KKR, which bought the site in 2015 for £500 million.