^^ As Marc says, a few Co's do demo's.
Best keep an eye out on the UK forum
Mike Birt of KTwoDistribution does a demo program http://www.ktwodistribution.com/demo-program
Tom Beaton does Ozone & Flysurferhttp://www.tombeaton.com
24\7 Boardsports in Calshot have a lot of brands for demohttp://www.24-7boardsports.com/
They are good guys and are happy to assist you in your goal