Rail and bus ticket website Trainline is reportedly set to launch the largest listing of a UK-based company this year.
According to The Times, the company is finalising plans for a stock market debut and could go public as soon as next month.
The initial public offering is expected to value Trainline at about £1bn, the newspaper reported.
Trainline was founded in 1997 by Virgin Trains and was sold to Exponent Private Equity in 2006.
Exponent tried to float Trainline in 2014 but sold it to US private equity firm KKR a year later for £450mln, instead.
Trainline processes more than £3bn of ticket sales a year in 45 countries. It employs about 600 people in London, Edinburgh and Paris.
The company is one of the UK’s so-called unicorns – a privately owned, tech start ups valued at more than US$1bn.
In the year to the end of February 2018, Trainline generated revenues of £167mln and a pre-tax profit of £38mln.