Dallas Cowboys quarterback Tony Romo has revealed that he is still feeling discomfort in his back, having arrived in London today.

Romo told the media that his injured back fared well on the long flight, but he conceded that he was still feeling the effects of his latest setback.

The 34-year-old did not move much during a walk-through practice on Tuesday, and coach Jason Garrett is expecting to face a difficult decision on Sunday.

However, Garrett remained confident that his first-choice signal-caller will recover after suffering two fractures in a small bone in his back.

Brandon Weeden will be expected to replace Romo if he is unable to play, with the Cowboys looking to regain top spot in the NFC East and to build on their 6-3 record so far this season.