IP.ACCESS, which moved to Cambourne business park two years ago, is one of just four companies from the East of England included in the Sunday Times of the fastest-growing technology companies in Britain. Mobile technology provider ip.access, which employs 115 people, is ranked 52nd in the national table, following sales growth 67 per cent over the two years from £3.9million in 2005 to £12.87million in 2007. It has raised more than £13million from investors, including Scottish Equity Partners. The subsidiary of TTP Communications plc was founded in 1999 and includes T-Mobile and O2 among its major customers. It specialises in developing products to improve signal range and quality. The Sunday Times Microsoft Tech Track 100 annual league table of unquoted independent companies is in its seventh year.