Looks to be a good list of visiting buses

Darlington 7

Wright Brothers Coaches, Crossley SD42
Doncaster 22

Cumbria Classic Coaches, Preston Corporation, Leyland Tiger “Rosie”

Cumbria Classic Coaches, Alexanders Bluebird, Leyland Tiger “Alex”

Crosville DLB 978, Bristol Lodekka “Harvey”

Parisan Service Bus, 1934 Renault TN6A
1947 Leyland Tiger Plaxton

Burlingham of Blackpool, 1947 Albion vintage coach

Middlesbrough Corporation 99, 1958 Dennis Loline MK1

1957 Leyland-MCW Olympian from the British Commercial Vehicle Museum (static display)

1959 AEC Regent Double Decker in Black & Cream Livery of Lockeys

1963 London Routemaster

1950 Albion Valiant (static display)

1920s Albion Bus (static display)

Northern General Transport Company Number 2099 AEC Routemaster from 1963

1966 open-top MCW-bodied Leyland Atlantean, Silver Jubilee livery
London Routemaster

Northern General Transport Leyland National (static display)

Go North East’s Versa Beamish bus (static display)

And there own fleet. Which includes for some reason some of the visiting buses

Darlington 4

Rotherham 220

Crosville 716

Venture J2007

Northern DCC 297

Newcastle Corporation 1379

Northern SOS 338 (static display)

Sunderland Corporation 2 (static display)

Sunderland Corporation 13