The Wakefield-based group said like-for-like sales rose 1.8 per cent in the 11 months to December 31 despite tough comparatives with the previous year.
The firm said it is trading in line with expectations and high cash generation will result in a significant reduction in net debt at the year end to a level lower than currently expected.
It added that investment in localised pricing strategies is paying of and it will continue to adopt this approach to defend its market leading position.
A total of 51 net new stores opened in the year to date, bringing the total estate to 764 stores as at the end of 2014.
The group reported strong growth in its online division Getting Personal, with double digit revenue growth since the half year stage.
The group’s CEO Richard Hayes said: “It is pleasing to report that the group continues to perform well, has had a solid Christmas trading period, and is on course to deliver sales growth at a similar level to the previous year.
“The strength of our retail proposition is the key to our consistent performance and we are well placed to further improve our customer offer in the year ahead. This is underpinned by our established vertically integrated model which has been developed over the past decade with significant investment.
“As the clear market leader, we remain confident of our ability to achieve further profitable growth.”
Paul McCrudden, EMEA head of content marketing at Twitter, has joined the board as an independent non-executive director. The group said he will bring a wealth of digital and marketing experience that will be particularly helpful as it develops its online activities.