Horne was one of the original line-up on London's Capital Radio, where he presented shows such as Your Mother Wouldn't like it, Mummy's Weekly & 6 of the Best. He remained on Capital Radio until 1986.
Since then, he re-joined Radio 1 in the early 1990s where he was a stand-in presenter and at the same time, he presented a weekend afternoon show on Classic FM. He also worked on the UK commercial radio overnight sustaining service, The Superstation.
His TV career has included presenting American Football on Channel 4 , Rock Steady, and Earsay also on Channel 4, American Football, and NBA for Sky Sports, and for many years was the presenter of ATP tennis, and Davis Cup worldwide.
Horne joined Virgin Radio in 1995, working 7 days a week. He took over the Drivetime show from the sacked Nick Abbot and 2 weekend shows as well. In 1997 he took on the weekday afternoon show from 1-4pm, before leaving the station in 1998.
At the beginning of 2003, Nicky replaced Charles Nove on the drivetime show on London's Jazz FM, later moving to mid-mornings until mid-2005, From then on, he was heard on Capital Gold every Sunday afternoon fronting a Classic Album Show. Currently, he can be heard on digital station Planet Rock as the weekday evening presenter. Nicky continues extra-radio work as a voiceover artist and corporate host & can be heard on Gold radio every Saturday afternoon from 2pm with the Sport's Saturday show & also every Sunday from 4pm with his Classic Album Show. His last Sunday show was broadcast on Sunday 21st September 2008