Patrick Robinson, Jane Gurnett and Lisa Coleman appeared as staff nurses Martin "Ash" Ashford, Rachel Longworth and Jude Korcanik.
[3] Michael N. Harbour, Gary Bakewell and David Robb joined the recurring cast as security guard Trevor Wilson, porter Tim Greenway and surgeon Henry Reeve-Jones in episodes three, eleven and thirteen respectively.
Mike has returned to the department, his marriage over for good, but Baz, who is now conducting an affair with Charlie, has been asked to stay on as senior registrar.
The journalist is ejected from the hospital by new PR officer Laura Milburn, but when the builder's son, on learning a friend of his was killed in the collapse, tells her everything.
After taking him to hospital, the couple decide to keep the farm but are unaware the brother has set fire to a barn for the insurance and become caught in the inferno.
At a home for the mentally ill, a distressed young woman accuses an older man who innocently bought her some chocolate of abusing her; the argument between the pair results in a gas explosion; the manager of the home suffers minor injuries, but the young woman is badly injured and dies just after reaching hospital.
A group of elderly people help out with a paramedical training exercise by posing as the victims of a bus crash; Liz is upset when one of them, an aspiring actor, gets too into character and grabs her.
One of the women suffers a genuine heart attack and is taken to hospital; she and her friend, who have been competing over the actor, are upset to find his stories of his past are exaggerated.
Jude feels Ash's relationship with Laura makes him unsuitable as union rep. Charlie is frustrated to witness Baz and Peter sharing an anniversary meal.
Her solicitor runs over an old lady and takes her to hospital where she collapses herself; she is pregnant and makes peace with her boyfriend, who wants her to reduce her workload.
A man waits until his wife and daughter have left home then dresses up in women's clothing; he falls down the stairs and is found by a window cleaner.
Charlie calls Social Services when a girl with an injured foot is left alone at the hospital while her mother goes for a job interview.
A man dies in Baz's care after being misdiagnosed by his GP and travelling 50 miles to the hospital because of new policies; his wife threatens to sue.
An elderly woman is about to bury her husband and tells her son she intends to give the life insurance to his sister to set up her business.
She then suffers a stroke and her son asks the staff not to treat her, since their father ended up as a vegetable, but her daughter tells Baz and Ash to put her on a ventilator.
A pair of travellers bring in the woman's daughter, who has an injured ankle; Daniel misdiagnoses her and Charlie and Rachel have to reset it.
A young man starting working at a prison is being driven in by his parents; his father pressures him into helping chase a robber and, although he escapes, the pursuit results in a car crashing into the stationary vehicle where his mother is sitting.
A woman comes in with an injured wrist; the staff are suspicious of her over-protective son but it transpires her husband walked out after learning their daughter isn't his and out of guilt she has been self-harming and buying extravagant presents for the children.
Trevor puts an electronic lock on the staff room door to prevent thefts but when people keep forgetting the code Charlie writes it down and Rachel's watch is stolen.
A boxer is told to throw a fight by his trainer on the orders of a local criminal family; he does so when his brother is threatened but suffers head injuries and dies in hospital.
A former army nurse who believes she has Gulf War Syndrome deliberately drives her car into a lorry; her husband, a fellow soldier, has been following the army's line that the condition does not exist but Baz convinces him to talk to her, their baby son Wesley is later diagnosed with hearing loss after Kate noticed that he wasn't reacting to noise from building work in the department.
PC Tony Poulson, attending the scene, tells Kate his wife was killed in similar circumstances two years previous.
Reeve-Jones is already under fire because of revelations that the Trust is financially involved with an arms firm run by his brother; a protest is being held outside the hospital.
Mike resigns on learning the board are going to support Reeve-Jones; he takes a job in Africa with Doctors Without Borders and asks Rachel to go with him.
A woman named Karen convinces her friend Danni to spy on her boyfriend Tony, who works in a restaurant and who she believes is having an affair with a colleague, Vicki.
Danni quickly realizes nothing is going on but Tony comforts Vicki when a customer gropes her; Karen sees them together, drives her car at them and crashes.
Ronald realises Walter blamed Eric because the family offends his sensibilities and suffers another stroke that leaves him comatose when Maud tells him the real mugger has been caught.
A fight between the two men distracts Kay, causing her to run over a man jogging in the middle of the night then crash into a car containing a woman in labour and her husband, prompting a pile-up.
Jerry is disgusted by Bobby's lack of compassion and obsession with his own minor facial cut, announcing he's realised he was glad to be shot of him.
Trevor chases after a mentally disturbed man who disappeared from the department but falls down some steps; Kate is left performing a bedside vigil.