How many spin-off TV shows were created from the British TV sitcom "Only Fools and Horses"?

"Only Fools and Horses" is a British television sitcom created and written by John Sullivan. Seven series were originally broadcast on BBC (British Broadcasting Corporation) One in the UK from 1981 to 1991, with sixteen sporadic Christmas specials aired until the end of the show in 2003. Set in working-class Peckham in south-east London, it stars David Jason as ambitious market trader Derek "Del Boy" Trotter and Nicholas Lyndhurst as his younger half-brother Rodney Trotter, alongside a supporting cast. The series follows the Trotters' highs and lows in life, in particular their attempts to get rich.

there were two spin-offs from the show "Only Fools and Horses".

"The Green Green Grass", also written by John Sullivan and directed by Tony Dow, was first aired in the UK in September 2005. Sullivan had considered writing a sitcom around the popular characters of Boycie and Marlene (John Challis and Sue Holderness) since the mid-1980s, but it was not until Only Fools And Horses ended that the idea came to fruition.

In 2003, it was reported that Sullivan was developing a prequel to the original series, "Once Upon a Time in Peckham", which would feature Del as a youngster in the 1960s and have a prominent role for his parents. The title was subsequently changed to "Rock & Chips". Filming began in August 2009, and it was shown on BBC One at 9pm on 24 January 2010.