A TV ad push, in the style of its recent brand campaign, will run from 25 December to 29 January to promote its Nationwide FlexAccount, which offer consumers free European travel insurance and savings on brands through its Simply Rewards programme.
The campaign will be supported with in-branch activity and radio advertising, which will run on stations such as Magic, Heart, Capital and Absolute.
Andy McQueen, marketing director at Nationwide, said: "Our FlexAccount rewards are a really compelling opportunity for customers they represent great value, with no catches.
"We wanted a fully integrated campaign to support this and really shout about what we are doing for our customers."
In September, Nationwide unveiled a new brand positioning based around the strapline 'On Your Side'.
The ads, by agency 18 Feet and Rising, featured a "magical carousel" that captures everyday moments in people's lives, showing how Nationwide can help them with important things such as saving for the future or buying a home.