Phil Vickery added to England's injury woes ahead of next weekend's RBS Six Nations Championship clash with Ireland as Gloucester beat Bath with an injury-time drop goal from substitute Brad Davies.

The Gloucester prop suffered what appeared to be an injury to his right arm and was forced off 28 minutes into the first half at Kingsholm.

Vickery started England's Six Nations defeat against France at Twickenham and would have been favourite to face the Irish.

With Leicester's Julian White also sidelined if Vickery fails to recover, Robinson will have no tight head props left in his 30-man squad forcing him to gamble on the likes of Bath's Duncan Bell or Northampton's Robbie Morris.

And to add to Robinson's worries Bath's Olly Barkley also pulled out of the derby match with a calf injury.

Before Vickery's departure, Gloucester had seized the initiative against their local rivals.

A break from Henry Paul in the midfield saw James Simpson-Daniel offload to Seti Kiole. The wing then set up Terry Fanolua who muscled his way over the try line.

Bath bounced back through flanker James Scaysbrook. Steve Borthwick took clear ball at an attacking lineout. The lineout was brought down but the ball popped out to Scaysbrook and he duly scooped it up to jump over the ruck and score.

Chris Malone converted then matched Paul's penalty to put Bath 10-8 up before the break.

There were to be no more tries but Paul and Malone continued their battle of the boot.

They each landed two penalties, which gave Bath a 16-14 lead and Gloucester had to manage without hooker Mefin Davies who was sin-binned for killing the ball. Bath, however, were unable to capitalise on their one-man advantage.

Gloucester had a chance to steal a win with 76 minutes gone but Paul did not have the legs to convert a 48-metre penalty.

It did not matter though as late replacement Davies came to the rescue with an 82nd-minute drop goal.

The two sides meet again next month in the Powergen Cup semi-finals.