Curry’s is now selling her ergonomically-designed G-Hold tablet holders, while she has also signed a distribution deal with Arthr, a company specialising in products and innovations for people with arthritis.

Ms Grieve, who was turned down by Dragons’ Den investors in 2016 before going on to land deals with tech giants Apple and Microsoft, said: “These are two very different but equally fantastic opportunities for G-Hold. The rollout with Curry’s is our most significant retail listing in the UK and means our products are now available in hundreds of stores across the country.

“This is hugely exciting for us. We’ve been in major USA stores since 2015, but nothing tops the truly feel-good moment when our friends and family can get their hands on a G-Hold at such a household name throughout the UK.

“The deal with Arthr will give millions of people who suffer from arthritis the chance to use their tablets and mobile phones in a far more comfortable and less painful way.”

She added: “Arthr is a distributor which specialises in products which enhance the lives of people of all ages who suffer from arthritis.

“Arthritis sufferers are often older people who are finding life very difficult at the moment due to the Coronavirus pandemic, so their mobile devices are often important lifelines for them.

“The patented ergonomic technology used in G-Hold tablet holders and our new G-Hold phone holders makes using tablets and mobile phones so much easier and less painful for people suffering from arthritis.”

Ms Grieve invented G-Hold tablet holders in 2015 as a follow-on from her Safetray product, which made it easier and safer for hospitality sector workers to carry trays.

Despite failing to land investment when she pitched G-Hold on Dragons’ Den she has grown the business into an international success story, and explained: “Since being on the show we’ve actually taken in 15 times more revenue than we were looking to raise in funding from the Dragons.

“Our team in Scotland always believed in the potential of our products and, although I couldn’t convince the Dragons in the Den, our growth over the past four years has proven that we were right to persevere.”

The holders are ergonomically designed to reduce stress and discomfort in hand and wrists while using tablet computers and mobile phones. Celebrity users include TV sports presenter Lee McKenzie and jazz singer Gregory Porter.

Ms Grieve added: “There are other tablet and mobile phone holders on the market, but we have spent a lot of time in biomechanics laboratories understanding the science of holding in order to develop our exclusive, patented technology. More and more people of all ages are reporting hand and wrist issues like repetitive strain injury through using tablets and mobile phones.

“But our holders are specifically designed for comfort and to avoid these sorts of problems which can become serious long-term medical issues.”

The Edinburgh-based manufacturer has also been busy supporting educators throughout lockdown, such as Worcester Public Schools in the USA and Cognita School Group.

Cognita runs 77 private schools across the world and ordered more than 1000 G-Holds for its teachers to use while delivering lessons from tablets.

Ms Grieve said: “We have always enjoyed working with the education sector, but even more so now with everything which has gone on this year in terms of the Coronavirus pandemic. The days of teachers or lecturers standing in front of a classroom and using a board with chalk or a marker pen are disappearing fast. 

“Both with classroom and remote learning there is an increasing move towards greater use of technology such as tablets. But if you’re teaching, lecturing or presenting for long periods of time with a tablet then you are putting huge strain on your hand, wrist and neck - and that’s before you have to worry about dropping and breaking your device.

“Our technology is proven to reduce this strain greatly, meaning you are far more comfortable and don’t have to worry about long-term health issues.”