About 50 members of Unison yesterday protested outside Headington’s Warneford Hospital against NHS pay conditions.

Two thirds of staff will see their pay frozen for a fourth year, while others have seen a rise of less than one per cent.

Unison spokesman Ian Mckendrick said: “Increasing pressure to deliver more on shrinking wages is undermining patient care.”

Union members will be balloted later this year on whether to strike.