The direct mail specialist's main site in Kettering was also awarded the standard, through Lloyds Register Quality Assurance, in March this year.
Sales and marketing director Michael Cox said the awards were the result of "two years' development work".
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"Gosh! That’s a huge debt - especially HMRC! It’s a shock that HMRC allowed such an amount to be accumulated."
"Whatever happened to the good old fashioned cash job! At least the banks didn't take 2-3% of each sale. After 30 odd transactions that £100 quid you had has gone."
"It's amazing what can be found on the "web" nowadays!"
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