A PLEA has been put out for blood donations.
NHS Blood and Transplant, which organises donor sessions, said stocks of O-negative and B-negative blood groups, are at their lowest level for four years.
Donors with blood group O-negative are typically known as the ‘universal donor’ as their blood can be given to patients with a different group.
Jon Latham, assistant director for marketing at NHS Blood and Transplant, said: ‘We constantly monitor donations and blood stocks for all blood groups throughout the year to ensure that we have enough blood to meet the demand of hospitals and patients, and have adequate contingency stocks.
‘Stocks of O-negative and B-negative are lower than we would like them to be and we are asking both O-negative and B-negative blood donors in particular to donate.’
You can donate on Monday, in Stamshaw Leisure Centre, Wilson Road, Portsmouth, from 1.30pm to 3.25pm and 4.30pm to 7.30pm.