Associated British Ports (ABP) has been ranked 12th in a list of Britain’s biggest mid-market private companies.

The port operator, which handles timber and other forest products at 16 of its 21 ports in the UK, achieved sales of £462.9m in 2007, with operating profit of £196.9m, according to the Top Track 250 list published in the Sunday Times on October 19. Its shareholders include infrastructure manager Borealis, investment management company GIC, and infrastructure funds Goldman Sachs Infrastructure Partners and Infracapital Partners.

ABP’s timber handling ports include Ipswich, King’s Lynn, Swansea, Troon, Grimsby and Hull, which handles more than 1.5 million m3 per year and is the UK’s largest softwood timber handling port.

Housebuilder Stewart Milne, which incorporates Stewart Milne Timber Systems, was placed 50th on the list, with sales of £348m and operating profit of £51.9m in the year to June 30, 2007.

Top Track 250 ranks Britain’s biggest mid-market private companies, based on sales in their latest available audited accounts.