He told the conference he hoped to attract a “tidal wave” of support, adding: “I could only say I would love to see many hundreds of growers, brokers, spinners, designers, fashion houses, manufacturers, retailers and others all following your lead by making and embracing the same public commitment. “In so doing, I believe they will position themselves as good citizens of the wool business, with what I hope will quickly become a public and well-recognised seal of approval.” Sir Paul told the audience he “fell in love with wool” as a young designer and urged producers to create more woollen sportswear, saying it could be developed as lightweight and showerproof. The designer proved the point by having a glass of water thrown at him by Nicholas Coleridge, chairman of the Campaign for Wool and president of Conde Nast International. Max Whitlock with Prince Charles and Sir Paul SmithCredit:PA Britain’s star gymnast joined the Campaign for Wool when he performed in front of the Prince of Wales and leading figures from the fashion industry. Max Whitlock swapped the Stella McCartney-designed gym kit he wore in Rio for a wool suit created by Sir Paul Smith. The 23-year-old double gold medallist, who said last month he would like to design sports footwear one day, walked on his hands before performing some of his famous pommel horse routines on a table to demonstrate the natural fabric’s flexibility. The performance was one of the highlights of a two-day event described by the prince as the “Davos of Wool”. Known north of the border as the Duke of Rothesay, he was joined at the inaugural Dumfries House Wool Conference in Ayrshire by Steve Rowe, CEO of Marks and Spencer, the model David Gandy, and a flock of sheep. The model David Gandy with Prince Charles at the first wool conference in Dumfries HouseCredit:PA Want the best of The Telegraph direct to your email and WhatsApp? Sign up to our free twice-daily Front Page newsletter and new audio briefings. Delegates discussed sustainability, animal welfare and the future aims of the industry, with representatives from the four main wool producing nations – the UK, Australia, South Africa and New Zealand – signing the world’s first Wool Declaration. The document commits them to uphold the highest environmental, animal welfare and industrial standards. The prince, as patron of the campaign, which was launched in 2010 to expand the market and promote awareness of wool’s environmental benefits, called for those involved in the industry to sign the declaration. He added that since the campaign started, wool prices have risen and there is “generally higher morale” in the industry.