Greyhound UK[1] was a low-cost intercity scheduled coach service in the United Kingdom owned by FirstGroup.

Greyhound UK began operations on 14 September 2009 with an hourly service between London and Portsmouth or Southampton.

The name and logo continued to be used by Bristol Omnibus Company (which bought Greyhound in 1936) until 1972 when their coach services were re-branded as National Express.

[14] FirstGroup now owns the former Bristol Omnibus Company, but their revival of the name is not connected to the former use of the name by their subsidiary; instead, it follows FirstGroup's acquisition of the owner of the American Greyhound Lines operation in February 2007, with the logo and livery adopted for the United Kingdom.

They were numbered in the same fleet numbering system as other FirstGroup vehicles, and also carried women’s names from popular American songs: 23315 - Sweet Caroline 23316 - Mrs. Robinson 23317 - Good Golly Miss Molly 23318 - Mandy 23319 - Sherry 23320 - Billie Jean 23321 - Proud Mary 23322 - Barbara Anne 23323 - Sharona 23324 - Joelene 23325 - Peggy Sue The coaches originally had 49 seats, and were purchased in 2005/06 for use on FirstGroup's National Express contracted work.