The integrated agency will continue to provide a range of services around DRTV including brand development, strategic planning and creative development.
T-Mobile awarded the account to the incumbent agency based on its strength of producing "great creative" and its existing relationship with the brand.
TMW has worked on a wide range of marketing activities for T-Mobile for several years including designing a website for 'Transmission' and 'Street Gigs', and the redesign of a business magazine.
The agency was also recently appointed to manage T-Mobile's in-store multimedia activity.
Jenny Chiu, account director at TMW, said: "We have been working with T-Mobile for a number of years and during that time our remit has expanded significantly. We are delighted to retain their DRTV account.
"This pitch was very much about building on our success and creating a more fresh and innovative approach to drive T-Mobile's DRTV activity."
Yvonne Foster, campaign manager at T-Mobile, said: "DRTV has enabled us to expand our offline media mix significantly over the past six months in a very competitive market where current media such as press and magazines are saturated.
"TMW have aided us to develop our DRTV strategy successfully and we have high hopes for this media going forward."