
Customers can download and print ‘free family swim' vouchers from British Gas microsite . The campaign will be promoted through TV and online ads.
The website was developed by branding and digital agency Rufus Leonard.
In March, British Gas announced a £15m sponsorship with British Swimming.
The energy supplier said the investment will be split evenly between elite athletes and grass roots development in a bid to produce a strong swimming team for the London 2012 Olympics.