Aaron, who's 31, is rushed to St George's after overturning his car onto metal railings during a high-speed collision. He has a serious laceration to his face where a spiked railing narrowly missed his eye socket. It becomes apparent that Aaron's memory has been affected; doctors suspect a brain injury and take him to CT. As Aaron undergoes tests, his twin brother Alvin talks about his hopes for Aaron's future. Fiona, who's 65, is rushed to St George's after falling over in a restaurant and cutting her knee during her friend Evelyn's 70th birthday party. Doctors are concerned that Fiona may have damaged a major artery.

Niki is airlifted to St George's after crashing in a charity bike ride. His wife is almost 300 miles away. Peter, who's 90 and served in the RAF during WWII, has blood poisoning.