NHS workers are currently tested for HIV at the start of their career.
Anyone going into a job that could expose patients to potential risk is also tested.
Staff are obliged under professional codes of conduct to have a further test if they think they may have been exposed to HIV, but this is not legally enforced.
More top news
Cincinnati Zoo's director stood by the decision to shoot dead a 17-year-old gorilla after a toddler accidentally entered his sanctuary.
A total of 8,648 sailors died during the largest naval engagement during the First World War, which marks its centenary on Tuesday.
The figures by the Global Slavery Index are a third higher than previously thought.