nat west bank ad music

[russellp]

What is the jazz music to the nat west ad with a doctor and a taxi driver?

[jenstar]

NatWest have been using the same music in various different arrangements for several years now, and the new music is just the same tune done in a jazz style - which suggests to me that it's a specially-composed piece, or at least that the various arrangements were done specially and won't be available to buy.