In a 2008 interview David Jason admitted he had to stop playing Frost because he was too old to play a policeman.

Frost was a chain smoker in the novels. In his 2013 autobiography "My Life" David Jason revealed they decided to make Frost a non-smoker in the television series as he had recently quit smoking cigarettes in real life.

Novellist R.D. Wingfield, whose "Frost" book were the inspiration for the series, was very critical of the TV adaptation and said that it had ruined the character of Jack Frost that he had created in his novels.

Arthur White, who plays Ernie Trigg, is David Jason's real life elder brother. There was already an actor called David White registered with the acting union so David chose to use Jason as his stage name.

David Jason grew a moustache for the role. It was his idea, as he imagined Frost grew one in his youth to give himself a few extra years and more maturity. He lost the moustache between series to play other parts and than needed four weeks to grow it back as well as stop shaving at the right time ahead of shooting. Sometimes Jason missed the mark and had to help it along with a bit of "coloring-in"' but it was always ready for filming.

There was considerable criticism that David Jason was 70 in the final series, a decade older than any serving policeman would be.

Between takes, the cast (particularly David Jason) and crew were forever playing pranks on John Lyons (DS George Toolan). They devised fake scripts which Lyons had to learn at short notice, involving ludicrous situations for Toolan: on one occasion, they made his character wear a neck brace; on another, they made him ferret around in a smelly rubbish bin looking for evidence. Each time, Lyons said "You won't catch me out like that again" but he always fell for the next prank.

In the first Frost novel, Frost at Christmas, Frost's full name is given as Jack Edward Frost, as engraved on the back of his George Cross. This was changed in the show's pilot episode, A Touch of Frost: Care and Protection (1992), where his full real name is shown on the Cross to be William Edward Frost. The producers felt that the name "Jack Frost" was implausible and diminished a detective's credibility, so "Jack" was turned into a nickname for the show instead.

Filming meant spending a lot of time away from home, at the studios in Leeds or on location in Wetherby, Harrogate, Dewsbury and all local stations. Yorkshire Television made it easy on David Jason by renting out a cottage rather than pay for a hotel, especially since Jason could cook for himself; he just wanted somewhere simple to go at the end of the day to clear his head. Yorkshire Television found Jason an old farmer's cottage without central heating, so he had to light a fire; on warm evenings he sat out in the garden which was always a pleasure. When asked did he get lonely, he said he didn't, because he enjoyed the quiet time. He also had his own driver, on call 24hrs a day, who collected Jason from Buckinghamshire for the 3hr drive to Yorkshire while he worked on his scripts, stop along the way for a bacon and egg roll and a cup of tea ("a very Frost-like meal"). Jason lived in a spartan farm cottage while the cast of Frost stayed at a hotel.

Drinking other people's teas and coffees became something of a habit for Frost - a little humanizing moment which chased through the series to make him more than just an efficient cop. This again was an element taken from the original novels, in which Frost would constantly drink colleagues' beverages while their backs were turned, and would also take food or request it (as well as drinks) from witnesses and even suspects, as well as other officers. He did this far more often though in the novels with cigarettes, which he would frequently steal from Mullett and those he came into contact with during the course of his investigations, often resulting in an outraged reaction (to Frost's indifference).

When David Jason expressed an interest in playing a detective, five books, all crime fictions in different areas by different authors were posted to him. Jason took them on holiday to Florida and read them over the next fortnight by the pool. Before Jason settled on Detective Inspector Jack Frost, he considered a Sherlock Holmes type detective because it was different from anything else he had done. Jason called from Florida saying he wanted Frost.

The series originally ended in 1997, but was later revived in 1999 until 2010.

David Jason said the popularity of the show was based on a hunch that had well and truly paid off. He liked the darkness of the show after the lightness of Only Fools and Horses (1981) and The Darling Buds of May (1991) because it showed audiences he could play both, but lightness became a part of Frost too.

When The Darling Buds of May (1991) came to an end, David Jason was asked what he wanted to do next, a new and exciting experience for him, because his television career had gotten so successful he could shout the odds on where his career went. He said he loved detective shows, and wanted to play a detective, which culminated in him getting the role of Detective Inspector Jack Frost.

Frost had to be cleaned up from the books, where Frost was a chain smoker, but David Jason recently gave up smoking. He used to smoke four or five cigarettes a day, or in the evening with a drink, and didn't want to start again, and smoking was taboo on TV in 1992. Frost was made a former heavy smoker who had just quit, making him grumpy and irritable around people who still did.

During the wrap party for The Darling Buds of May (1991), David Jason was asked by Yorkshire Television executives why he thought he could play Detective Inspector Jack Frost in the upcoming series. Jason felt he was being interrogated by good and bad executives. He explained the genre was very popular, and he wanted to explore a slightly darker edge in the character of Frost, while claiming the superiority of English detective shows (audience attempts to solve crime in tandem with the detective) to the American attempt (audience is shown the crime and the criminal at the start of the story, and then follows the detective's trail to the guilty party). After that, Jason had convinced them.

David Jason liked launching rockets while making the show; sometimes to great acclaim, sometimes not. He liked to build ships and planes which then developed into rockets and then launchable rockets between two and five feet tall, with an engine and an explosive component that could fly between 500 and 900ft in the air; Jason liked the rockets best because you could get a performance out of them. Jason assembled them with tools packed in an old makeup case and from specialist parts from obscure sources across Yorkshire. Jason launched them for cast and crew at the back of Leeds Hospital for three years when they filmed in the mortuary. Jason later built a launch pad from an old lighting stand and added a launcher with a key, lights and a 2-tone alarm. They were the dampest thing you had ever seen. The masterpiece was a Saturn V replica with one of the biggest engines so it was a complex build. It launched like the real thing by hovering above the pad and set off into the sky. Jason liked launching that one most, especially when they came back, which was never a sure thing, with a parachute that emerged from the nose cone. After constant use, it failed to launch at all, and was reluctantly retired.

Because David Jason is 5' 6'' which is quite short for a policeman, Jason tried to stand as tall as possible and give Frost a "very correct, shoulders-back bearing" so his height was less of an issue.

In September, 2008 a press release went out about Jack Frost's retirement. This was not because of lack of storylines or David Jason losing interest in the character (he would have happily played him forever), the problem was Jason's age: at 68, Jack Frost was the oldest copper on the force. He would have retired ten years before or sooner, so he bowed out spectacularly, according to Jason. The deciding factor was a remark that Dennis Waterman made in a newspaper "David Jason as Frost looks like he's the oldest policeman in the world". At the time, Waterman himself was playing a retired policeman who was brought back to work for the police as a civilian in New Tricks (2003).

David Jason said playing Frost for 18 years was a "long time to spend in the skin of a shabby detective. But, boy, I did love playing that part".

Like The Darling Buds of May (1991), both shows had a tough food regime that was hard on David Jason's stomach, because Frost wasn't a healthy eater, e.g. bacon sandwiches, chips, fry-ups, etc. People used to remark on it to Jason, that he was eating badly.

To prevent the show from becoming too formulaic, Frost had several sidekicks between cases, unlike most detective shows. It gave him new characters to bounce off and challenge his slightly set view of the world. This was an element taken from the original novels, in which Frost always had a new partner (with the previous ones never being mentioned again in subsequent books).

Of all the shows David Jason has done, he claimed this was the one that involved the most elaborate mucking about on the part of the people involved in it. The other show that ran a close second was Only Fools and Horses (1981).

The title music and scores for early episodes of the show were composed by Barbara Thomson and Jon Hiseman. Ray Russell took over music duties and continued up to, and including, the final two-part story. Music for the series was recorded at 'Broken Hill Studios', Sussex, England. Recordings engineered by Rik Walton.

When David Jason decided to branch out from comedy roles such as Granville in Open All Hours (1976), Del Boy in Only Fools and Horses (1981) and Pop Larkin in The Darling Buds of May (1991), the producers offered him his first major drama role in a police series, without having a character or setting in mind, and only later decided to dramatise R.D. Wingfield's books.

Whenever on location, lorries, sets, makeup and catering would be there. Filming would be done in three days.

David Jason said the show was one of the UK's favorite drama serials. They had come on a bit of a journey, and it was nice to reach this point in the road.

Two of the regular stars in this series are actors who have changed their names from White for professional reasons. Inspector Frost is played by David Jason (real name David John White) and his on/off girlfriend Shirley Fisher is played by Lindy Whiteford (real name Lindy White).

David Jason and co-stars played pranks of each other during filming.

David Jason would frequently play pranks co-star John Lyons.

The series was noted for the number of gay characters and anti-military storylines.

David Jason used to go to a hotel periodically for seminars to go through scripts, plot developments and story ideas for the show.

David Jason said he never would have been cast as Detective Inspector Jack Frost if he hadn't appeared in A Bit of a Do (1989) first, because it put him on Yorkshire Television's radar, which subsequently led him to The Darling Buds of May (1991) and then Frost.

David Jason said the show was "contemporary, clever, dark and revolved around unpleasantness like murders of drug addicts and robberies at strip clubs". Also, Frost was "shabby, bitter, caustic and a commanding character, unlike Pop Larkin".

A courtroom spin-off called "The Usher" was considered, but within three months of the end of the show, Yorkshire Television changed hands and amalgamated with ITV, so "The Usher" never went ahead.

David Jason filmed episodes of the show and the Only Fools and Horses (1981) Christmas Specials concurrently.

A Touch of Frost is a British crime drama series that on ITV in the UK from 1992 - 2010 and is based on the novels by R.D. Wingfield and was one of the longest running TV series in television series. The series takes place in the fictional town of Denton and David Jason stars as aging and tough police detective with a mild sense of humor DI Jack Frost as he fights for justice and lock criminals behind bars which gets unappreciated by his superior officer Supt. Mullet.

David Jason said Frost was a man who passed from his fifties deep into his sixties during the course of the show, and wasn't likely to be knocking his pipe out until four in the morning. He figured it was better to put his head in a paint pot for a couple of hours and wind down that way.

When it was decided to end the TV series in 2010, three alternative endings were filmed in which Frost, Mullett and Toolan, respectively, died. These were kept securely locked away until the day of transmission, when the selected one (in which Toolan dies in hospital) was transmitted.