As well as PlusBus ticketing, the National Rail fares system includes over 200 "through-fares" from rail stations to non-rail served destinations, such as airports (e.g. Bristol Airport), attractions (e.g. Bluewater), towns (e.g. Minehead). Ask at any National Rail station ticket office for details of these "through-fares".
Here's a list of other great-value integrated ticketing schemes for passengers making door-to-door journeys by train, bus and tram.
Multi-operator bus, tram & train ticketing schemes:
Bath, Bristol & Weston-s-Mare: Freedom Travelpass
Cornwall: Ride Cornwall
Greater Manchester: System One Travelcards
London: Travelcard & Oyster
Merseyside: Saverway & Trio
Nottingham city: Robin Hood card
South Yorkshire: Travelmaster
Tyne & Wear: network one tickets
West Midlands: Network card
West Yorkshire: MetroCard
Lothian & South East Scotland: One Ticket
WALES: Explore Wales pass
Multi-operator bus only ticketing schemes:
County Durham, Tyne & Wear & Northumberland: Explorer, North East
Kent, Medway towns, Sussex, Surrey and East Hampshire: Discovery ticket
Norwich city: Fusion
Oxford city: OxfordSmartZone
Southampton & South Hampshire: Solent go
Check with your local bus operator or local authority to see if there are other integrated ticketing schemes available.