Britain's's oldest tandem riders are still pedalling their bicycle made for two" even though they have a combined age of 177. Betty Cox, 91, and husband Graham, 86, have been riding together ever since they met 70 years ago. The cycling-mad duo have travelled in Scotland, Norway and even completed a 400 mile round trip to Cornwall in just one week. Now fitness fanatic Mrs Cox from South Wales is encouraging others to get active. She said: "We've always loved cycling - and we are always out together. "I've been cycling for 69 years and my husband for 76 years. We started on the tandem soon after we met and have loved it ever since. "In 1949 we cycled from our home to Cornwall and back in a week. We also got to Scotland in a few days. "Graham tends to go on the front and me on the back. We love going on it." The couple have reached 1,000 miles on their new tandem - after only riding it for six months. Mr Cox said: "We were quite surprised at it. We've never really thought of how many miles we do. I suppose not many people manage to reach that amount at our age. We go out on the tandem four days a week and we must do a lot of miles. Regular exercise, like we do on the tandem, is the key to a long and happy life. Just look at us. By looking at our ages is proof that exercise really does benefit you in the long run."