Coronation Street is a British soap opera, initially produced by Granada Television.
 Created by writer Tony Warren, "Coronation Street" first broadcast on ITV on 9 December 1960.
 The following is a list of characters introduced in the show's fourth year, by order of first appearance.
Coronation Street (informally known as Corrie) is a British soap opera created by Granada Television and shown on ITV since 9 December 1960.
 The programme centres on Coronation Street in Weatherfield, a fictional town based on inner-city Salford, its terraced houses, café, corner shop, newsagents, building yard, taxicab office, salon, restaurant, textile factory and the Rovers Return pub.
 In the show's fictional history, the street was built in 1902 and named in honour of the coronation of King Edward VII.
Springhill was a British soap opera/drama, produced by Granada Television and broadcast from 1 October 1996 to 18 June 1997 on the Sky One satellite channel, and later on Channel 4.
 It consisted of 2 series, each containing 26 episodes.
 Set in Liverpool, "Springhill" based its main theme on the battle between good and evil, entwined around a complex family drama.
 Issues covered included adoption revelation, genetic sexual attraction, bigamy, homosexuality, infertility, surrogacy and murder.
 Aside from this there was a supernatural aspect, which included elements of religion, Angels, apparitions, witchcraft, time travel and the Second Coming of Christ.
Hollyoaks is a British soap opera, first broadcast on Channel 4 on 23 October 1995.
 It was originally devised by Phil Redmond, who had previously conceived the Channel 4 soap "Brookside".
 The programme is set in a fictional suburb of Chester called Hollyoaks, and features a large cast of characters primarily aged between 16 and 35.
 It is mostly filmed and produced in Childwall, Liverpool, although nearby locations are sometimes used.
 Beginning with a cast of just seven major characters in 1995, the serial now has approximately 50 main cast members.
 "Hollyoaks" has a high cast turnover in comparison with other British soaps; as of May 2014, just thirty-seven characters have spent five years or longer on the show.
 The programme has won 28 British Soap Awards, 11 Inside Soap Awards, one "TRIC Award" and one National Television Award; at the 2014 British Soap Awards, "Hollyoaks" won Best British Soap for the first time, breaking the 15-year draw between rival soaps "EastEnders" and "Coronation Street".
 It is also popular around the world.
 The longest-serving cast member is Nick Pickard, who has played Tony Hutchinson since the first episode in 1995; all the other original characters left before 2000.
Coronation Street is a British soap opera, initially produced by Granada Television.
 Created by writer Tony Warren, "Coronation Street" first broadcast on ITV on 9 December 1960.
 The following is a list of characters introduced in the show's fifth year, by order of first appearance.
"Koreanosaurus" (meaning "Korean lizard") is the informal name given to an as-yet undescribed genus of dinosaur from the Late Cretaceous.
 It was a possible dromaeosaur (or similar theropod) which lived in what is now Korea, although at times it has been referred to the Tyrannosauridae and Hypsilophodontidae.
 Based solely on a femur, the type species was coined by Kim in 1979, who by 1993 had decided that it was a species of "Deinonychus", and created the informal name "D." "koreanensis".
 It is probably the same as "Koreasaurus", another informal name for a possible Korean dromaeosaurid.
Jon Rollason (9 April 1931 – 20 February 2016) was an English television actor.
 He is best remembered for the role of Dr. Martin King in "The Avengers".
 He also appeared in episodes of "Doctor Who", "Z-Cars", "Coronation Street", "Crossroads" in 1973 and "Softly, Softly".
 He also wrote the scripts for episodes of the soap opera "Crossroads".
ITV Granada (formerly Granada Television; informally Granada) is the Channel 3 regional service for North West England.
 The licence for the region has been held by ITV Broadcasting Limited since November 2008.
 It is the largest independent television-franchise producing company in the UK, accounting for 25% of the total broadcasting output of the ITV network.
 It had been held by Granada Television, which was founded by Sidney Bernstein and based at Granada Studios on Quay Street in Manchester since its inception.
 This was the only surviving company of the original four Independent Television Authority franchisees from 1954; Granada Media Group (parent company of Granada Television) merged with Carlton Communications to form ITV plc in 2004.
 It covers Cheshire, Greater Manchester, Lancashire, Merseyside, northwestern Derbyshire, part of Cumbria and North Yorkshire.
 On 15 July 2009, the Isle of Man was transferred to ITV Granada from ITV Border (even though the Isle of Man is a British Crown Dependency and is not part of the United Kingdom).
Coronation Street is a British soap opera, initially produced by Granada Television.
 Created by writer Tony Warren, "Coronation Street" first broadcast on ITV on 9 December 1960.
 The following is a list of characters introduced in the show's twenty-ninth year, by order of first appearance.
The Practice was a 1985 British television soap opera produced for ITV by Granada Television, which aired for two series in 1985 and 1986.
 The series was first introduced as a twice-weekly medical drama in January 1985, becoming Granada's second regular networked soap opera along with "Coronation Street", with the idea being that its hard-hitting storylines would be a competitor with the BBC's "EastEnders" which started airing the following month.
 The Practice was set in a GP's surgery in the fictional Manchester suburb of Castlehulme and had an initial run of 34 episodes airing for 30 minutes in an early evening slot on Friday and Sunday evenings throughout the Winter and Spring of 1985.
 However, the series did not perform as well as had been hoped and it disappeared from screens in May 1985.
 It returned for a second run of 13 one-hour episodes between May and August 1986, this time airing in a 9pm slot on Friday evenings.
 After series two ended no further episodes were made.

Question: What is the informal name of the British soap opera created by Granada Television that Jon Rollason has appeared in episodes of?
Answer: Corrie