Traditionally, demand for topless motoring rises in summer and falls in winter, but the weatherproof security of the new breed of coupe-cabriolets is winning buyers over, according to market analysts CAP.
Britain is second only to Gemany in its love of convertibles, which represented 4.3% of all new registrations in 2006, according to the Society of Motor Manufacturers and Traders (SMMT).
CAP says folding hard-tops represent 29% of the convertible market today, with 16 out of 55 cabriolets sporting metal roofs.
Retail used dealers have confirmed the growth in popularity of folding hard-tops, with 60% saying their customers preferred them to canvas roof variants.
A quarter of dealers report a growing demand for convertibles despite the winter.
CAP forecast manager Jeff Knight said: “Regardless of build quality, customers perceive canvas roofs as more vulnerable while hard-tops remove those concerns.
“We still have to see whether this ingenious but complex metal folding roof technology remains problem-free in the long term.
“But at the moment, the signs are that these cars are enjoying high consumer demand regardless of season.”