The Bickerton was an early folding bike, manufactured between 1971 and 1991. This splendid advert was run in 1983:
Interestingly one of the commenters on the Youtube page is one sk8erboi600, the account name that I believe belongs to Mark Sanders, creator of the Strida and other innovative folding bikes. He says:
Well done Mark - nice to see the old ad again.
inspired many of us !