Gorman has slammed a name and shame campaign targeted at the fashion industry.
Earlier this week, charity group Oxfam published a company register aimed at pressuring brands to be more transparent about their supply chains.
In a statement issued on its website, Gorman disputed the integrity of the campaign.
"Gorman has an established social and ethical compliance policy that provides a framework for communicating our ethical standards to our manufacturers.
"Using the ethical trading initiative base code as a guide, it references both local laws, The International Labour Organisation (ILO) conventions and principles of the United Nations Universal Declaration of human rights.
"To monitor conditions, we engage Qualspec, a registered quality and ethical auditing body that uses the global audit standard scoring system. We published a summary of our audit results on our website.
"The Gorman team are also regular visitors to the five factories that produce 85% of our products.
"We have had long-term working relationships with these factories, ranging between four and 12 years.
In addition, 25% of the Gorman range has organic certification.
"Gorman does not currently publish the details of its manufacturers for commercial reasons, and not for ethical compliance reasons.
"This is because Gorman team have worked closely with their manufacturers on the development of techniques, trims and treatments that are key to Gorman’s point-of-difference in the marketplace.
"We are currently not prepared to share the details of our manufacturers with our competitors."
Gorman claimed it met with Oxfam representatives in October to discuss several alternatives around supply chain transparency.
"Oxfam has not yet taken on-board any of our suggestions, but we look forward to continuing the dialogue in the future."