"ISO 9001 is an accreditation awarded to only five per cent of businesses - the perception is that that figure is much higher," said Chris Earle, Unicom's Operations Director.
"In an intensely challenging business where we are under scrutiny from a vast audience this is a tremendous endorsement of our team's efforts to provide the best possible customer service.
"Following a six-month preparation and assessment period, the ISO 9001 certification was awarded by outside experts who are used to judging standards on a daily basis in a wide variety of trades and industries.
With one of the highest customer loyalty levels in telecoms, and now ISO 9001 certification, it clearly indicates that we're amongst the best."
Unicom was also named in the Sunday Times list of the UK's fastest growing tech companies by turnover growth over a three year period - its fifth Sunday Times listing in three years. In both 2006 and 2007 Unicom was ranked by both profit growth and turnover growth over a three year period - the only company nationwide to be ranked by both profit and turnover.
Manchester-based Unicom has regional headquarters in Birmingham, Ipswich, Leeds, Milton Keynes, Newcastle-upon-Tyne, Nottingham, Sheffield and Stoke-on-Trent.
"Some companies may enjoy growth in terms of either profit or turnover, but it is unusual for companies to enjoy such growth in both profits and turnover at the same time, our quality of customer service is a key factor." said Chris Earle, Operations Director, Unicom.
Unicom has 70,000 business customers, primarily small or owner-managed businesses with telephone bills of approximately £1,000 a year. The specialised nature of the business telephony and broadband products offered by Unicom provides significant savings for its business users.
"Unicom customers can expect calls to be answered in under 4 seconds, by a real person based in the UK. We've not actually had a price increase since we started offering our telecom services in 2001, and we've never used 0870 numbers. These factors have ensured our customer churn rate to competitors is less than 5%, which is the best in the industry." said Chris Earle.