Desmond's is set in the same universe as Only Fools and Horses
Both shows are set in the South London district of Peckham. Porkpie at least is known to drink in the Nag's Head (a real-life pub in Peckham) and so probably knows Del, Rodney and the rest. Lee has probably had a few business dealings with the Trotters over the years, while Michael could work in the same bank as Cassandra.- Taking this a step further, Desmond wasn't really a terrible barber as some characters implied. It just looked that way because he bought all of his equipment from Del, and it was mostly defective in some way. As a result, he resolved to have nothing more to do with him, which is why they never interacted.
