From 1997 to 2004, Alex Kingston played the character of Dr. Elizabeth Corday in the Amercian television series, ER.

First appearing at the opening of season four in the episode "Ambush", Elizabeth Corday is an English surgeon who has moved to Chicago to gain more experience in trauma surgery. We learn in her first episode that she comes from a whole family of surgeons, Corday's grandfather was a surgeon, as is her father and, since there are no boys in her family, she took on that role. In a later episode we learn that her father is a top surgeon at St. Thomas' Hospital, London. Corday's mother (played by Judy Parfitt) is an astrophysicist with whom she has a rather rocky relationship. Corday feels that her mother didn't spend enough time with her as a girl and that she was "raised by nannies and boarding schools", although she finds a more nuanced perspective on things once she becomes a mother herself. Though the two do seem to come to some kind of mutual agreement, the relationship is still strained.

Corday faces many problems in adjusting to the American way of life. In her first trauma, she completely baffles the rest of the staff by using lots of British terms not used in America - for example, she asks them to "bleep Benton" (page Dr. Peter Benton), order an "FBC" (US term "CBC"), and perform a "tube thoracostomy" (US term "chest tube"). She also introduces herself as "Miss Corday", as is customary for British surgeons, and not "Dr Corday". She becomes popular amongst the other staff though, both for her surgical competence and for her personality. She quickly gains a reputation for being unimpressed by status, for instance she greets one eminent surgeon, Dr. Sam Breedlove, with "I knew you were old but I didn't know you were so short!"

She becomes friends with many of the female ER staff, including Carol Hathaway and Dr. Anna del Amico; and later on Abby Lockhart and Susan Lewis. Despite her arrogant and opinionated exterior, she has a deeply caring side to her - she is there to provide support at critical moments for both staff and patients alike. Despite their long and adversarial history, she supports Robert Romano through the ordeal with the loss of his arm; and similarly she overcomes her deep dislike of Kerry Weaver to be supportive of her following the death of her lover Sandy Lopez, although they never really mend fences and this plays a large part in her exit from County.

Because of the strong ties she has made with Chicago, Corday decides to stay on after her fellowship is terminated, even though this means that she has to repeat her internship in order to get a license to practice in the United States during Season 5. This is a particularly trying time for her - she has to adjust to being at the bottom of the heap after enjoying so long at the top, and on top of that she is supervised initially by Dale Edson - described even by Romano as a weasel.

During this time, she makes repeated attempts to become romantically involved with Benton, eventually succeeding. He even agrees to take over as her supervisor after a while. She faces further trouble when, at the end of a 36 hour shift, she makes a non-lethal mistake in calculating how much drug to inject into a patient. Fortunately, this doesn't put her off her stride, and she uses it to campaign for better conditions for junior medical staff. She also amicably ends her romantic relationship with Peter after that. However, the affair ends up haunting her later on when Dr. Maggie Doyle correctly accuses Dr. Romano of sexual harassment after he finds out she was gay and gives her a bad performance review; Elizabeth wants to go on the record to support Maggie's claims, but is forced to back down when Romano reveals he'd known she was dating Peter secretly while he was her supervisor.
After completing her internship at the end of Season 5, at the start of Season 6 Corday is offered the position of Associate Chief of Surgery by newly appointed Chief of Staff Romano, who announces the appointment without even asking her. She takes the job, however, and soon finds herself getting caught up in hospital politics.

In season 6, Corday saves the life of serial rapist and killer who starts to engage her in a series of mind games. When a victim's family wants to learn of their daughter's body's location, the killer manipulates Corday into euthanizing him in exchange for the location. At the last minute, Corday realizes that the killer was afraid of her for the power that she held over him and she spares his life, breaking his will and 'winning the game'.

Corday becomes romantically involved with Dr. Mark Greene during season 5, and in season 7 finds out that she is pregnant with his child. They marry and name their daughter Ella.
However, Corday's marriage to Greene is difficult for both parties. Corday faces struggles at work after she is sued for allegedly rushing an operation (leading to paralysis of the patient), and her pregnancy is nearly compromised when she goes into labor whilst on scene at a train wreck.
Greene is diagnosed with a terminal brain tumor, but is given hope of a reprieve though, when Greene finds a surgeon in New York who can remove the tumor. Corday accompanies Greene to New York City and is present in the operating room for the procedure, by his side all the time. The couple later get married (after a series of glitches with the transport for both parties) and appear to be very happy. Corday is heavily pregnant at the time of the wedding, and gives birth to baby, Ella, a short time later.

This happiness is not maintained for very long, however - Greene's daughter Rachel (from his marriage to Jen) has by now grown from a nice child into a troublesome teenager. After falling out with Jen, Rachel moves in with Greene, Corday and baby Ella. Things are not much better for her there, though - she and Corday are constantly arguing, culminating eventually in Ella swallowing ecstasy that belonged to Rachel. Corday is so furious that she tells Rachel to leave the house, and after Mark refuses to send Rachel back to Jen, or press charges, Corday moves out instead, taking Ella with her. When Susan Lewis returns to County General after five years, Corday seems to be at odds with her. She is cautious because of the relationship that Susan and Mark once had. Later on after Mark's death, she and Susan strike up a friendship.
At about the same time, Greene learns that the tumor has returned, and that this time it was inoperable. On hearing the news through a third party and getting a dose-of-reality talk from Romano, Corday decides to move back in with him and Rachel. Greene eventually leaves Chicago to spend his final days with his daughter in Hawaii. On the walk home after a day of surfing, Mark suffers a seizure and in a panic, Rachel calls Elizabeth, who arrives in Hawaii soon after with Ella. The four spend Mark's last few days bonding and overcoming obstacles. Corday tells Rachel after the funeral that it would be ok for her to visit her sister, and later on she does so and Elizabeth bemusedly helps Rachel acquire birth control pills when her stepdaughter shows up with her teenage boyfriend.
 After Greene's death, Corday returns to England for several months, but she finds that she can no longer fit in because of her being in the States for so long, suffering bullying and sexist treatment at the hands of her British colleagues for her 'American' ways.

Elizabeth returns to her job at County General soon after the start of season 9, where she becomes harsh with patients, curt with colleagues, and particularly clashes with Med Student Paul Nathan (Don Cheadle) who is trying to become a physician despite advancing Parkinson's Disease. Elizabeth later confronts her agony over Mark's death and also makes peace with Nathan during a horrifying case where the wife and son of a decent man have been killed by a drunk driver, and they are able to save his other son by doing a transplant from the dying son. Corday is saddened to see Romano losing his career due to his arm amputation/reattachment. An even bigger blow hits Corday later during Season 10 when Robert Romano is killed in a helicopter accident. Later in the season, Dr. Corday is appointed to Chief of Surgery by Kerry Weaver.
In her love life, she has some trouble moving on and making the right choices. She begins a relationship with a charismatic surgeon, Dr. Dorset (Bruno Campos), which quickly ends when she discovers that he is married. Later, she begins seeing two men at the same time, another doctor at County (Paul Blackthorne) and a teacher (Steven Culp).
In Season 11, in the episode Try Carter Corday is convinced by Dr. John Carter to perform an illegal donation procedure between two HIV positive patients. This results in her facing the possibility of her losing her license and being dismissed from the staff. Weaver offers her the position of a clinical instructor with no possibility of tenure or future promotion. With her career all but over at County, Corday quits her job and moves back to England. Corday's final appearance as a series regular was in Season 11, episode 4 Fear. She is replaced as Chief of Surgery by Dr. Lucien Dubenko, whom she had been adamantly opposed to hiring at County in the first place.


Alex Kingston's ER Bloopers
The Old Gang Reunited (Series 15)