Junior doctors have gathered outside of Royal Berkshire Hospital as part of a nationwide strike.
It is the 11th walkout in a long dispute over what they believe is unfair pay.
British Medical Association members are on a five-day strike, with the NHS warning of major disruptions to routine hospital services as a result.
The union decided to call more strike action, the first since February, after they said that no credible new offer had been made to them.
Junior doctors received a pay rise averaging almost 9% in the last financial year, but has asked for a 35% pay rise to make up for what they believe are 15 years of below inflation rises.
Matthew Taylor, chief executive of the NHS Confederation has criticised the timing of the strikes.
He said: “While we fully understand the genuine grievances junior doctors have over their pay, conditions and training, NHS leaders will still be frustrated that they will yet again be taking to the picket lines.
“Holding strikes in the middle of an election campaign, when no political party is in a position to bring the dispute to a close, is a bitter pill to swallow for staff who have to plug the gaps and patients who will have their appointments cancelled or delayed.”
