Richard Davies, 49, and Faye Stevenson-Davies, 43, won their first £1million prize on the EuroMillions Millionaire Maker in June 2018.
The couple continued playing and, last month, banked a second £1million prize after matching five main numbers and the Bonus Ball in the Lotto draw held on November 26.
Experts at The National Lottery estimated the odds of winning the EuroMillions Millionaire Maker and then matching five main numbers and the bonus ball on Lotto are over 24 trillion to one.
Faye said: “We always believed winning was possible, and once we scooped £million and met hundreds of other lucky winners, we realized fairytales do come true and there are winners everywhere! We knew the odds of it happening again were outrageous, but we're proof that if you believe, anything is possible.”
Richard added: “Everyone keeps asking what we'll do, but we genuinely have no idea at present. The first time around we gifted people cars, we donated a minibus to the local rugby team and did our best to help friends and family. It was all new and it was amazing to be able to make a difference.
“This time, who knows? We'll take our time and enjoy the moment.”