The firm was the first to bring DNA paternity tests to the high street 18 months ago and has since sold 3,000 DNA test kits.

Manchester was one of the best locations in terms of sales, with the Salford outlet delivering the best performance.

In 2015, high street discount retailer HomeBargains began stocking the paternity testing kit in its 290 stores across the UK, priced at £4.99 and offering a £99 processing service. Until that time, kits such as this were only available through online ordering.

AlphaBiolabs’ sales forecast across the three Manchester outlets was 500 units, against 1,500 online purchases, for the first year.

Actual sales were subsequently 589 off the shelf, against 2,258 online purchases, with the Manchester region accounting for around 20 per cent of national outlet sales.

David Thomas of AlphaBiolabs laboratory said: “We are the first laboratory in the UK to offer an off the shelf paternity test, supported by our first class 24 hour turnaround service and these figures show that demand is increasing.

“In the first year of trading with HomeBargains, over 3,000 kits were sold across the UK, delivering revenue in excess of £450,000. Manchester was one of the best locations in terms of sales, with the Salford outlet delivering the best performance.”

In the last 18 months, AlphaBiolabs has invested £1m in new advanced analytical equipment which has allowed the firm to continue to drive innovation within the industry.

It has also continued to grow its network of walk-in centres in cities across the UK including Manchester, Liverpool, Birmingham, Preston, Warrington and London which enable people to have their DNA samples taken from free for all legal testing. This could save customers up to £300 per test.

David Thomas went on to say “As there are only a couple of UK based DNA testing laboratories our main competition is from cheap tests coming in from outside of the UK.

These are not accredited to the high standard which the UK public want, so we want AlphaBiolabs to always strive to bring the fastest, most accurate DNA testing service available and fly the flag for UK business.