Gradley was especially keen to ensure the T-shirts are made from cotton certified by the Soil Association and without the use of child labour, forced labour and in safe and healthy working conditions.
The label has been accredited by the Fair Wear Foundation because of its ethical approach to manufacture.
“Since I decided to take the plunge and start the business I’ve relied a lot on my family for support, as we’ve remained in full-time employment we’ve been working evenings and weekends and using annual leave to ensure that the business continues to progress, launching our first design in March was a great achievement for us all,” said Gradley, who works in the public sector.
The brand has already been involved with this year’s Newcastle Fashion Week, the Newcastle Green Festival, the South of Tyne Green Festival and sponsored a stage at the Make a Scene festival held at Teesside University.
Gradley is also selling online via the ASOS marketplace and has interest from a number of independent fashion retailers.
And a Subtle T-shirt also made it on the stage at Glastonbury, worn by Ben dDancer who sings with North East band Vinyl Jacket.
Gradley said: “I’m so pleased with the impact we’re making, people seem to really identify with the ethos behind the brand.
“I’m excited too about the launch of Subtle’s new designs, as well as introducing new colours to the available ranges. In the future I’m looking to expand the business to include both women’s and children’s clothes and accessories too.”