Private healthcare insurer PPP has launched a fitness programme in conjunction with personal trainer David Marshall to improve the health of its 2.5 million customers.
The company has signed an exclusive one-year deal with Marshall, who devised the Bodydoctor Fitness and Nutrition Programme.
It is being used currently by Pop Idol presenters Ant and Dec and England International Rio Ferdinand.
PPP marketing director Darrin Nightingale said: "We are co-branding a mobile personal trainer, comprising a manual, video and audio version of the programme."
The mobile unit will be offered initially at a special discounted rate to PPP's non-corporate clients, before being rolled out to all 2.5 million clients by the end of the year. It will also be available to non-PPP customers.
Nightingale added: "It is part of a whole range of schemes we have in place to improve the health of the nation."
The Bodydoctor programme, which has received medical approval, found fame three years ago when it was used by model Sophie Dahl, who dropped from a size 18 to a size 12 within five weeks.
Nightingale said PPP had chosen the programme because many people had tried it with proven results.
"It can be done by anybody from the age of 18 to 80," he said.
It is the first time that PPP has entered into a sponsorship deal of this sort.