Northumbria | Arriva Yorkshire | Arriva | Siward, Earl of Northumbria | Edwin of Northumbria | Oswald of Northumbria | Æthelfrith of Northumbria | Waltheof, Earl of Northumbria | Oswiu of Northumbria | Ecgfrith of Northumbria | Arriva Midlands | Earl of Northumbria | Osberht of Northumbria | Northumbria University | Gospatric, Earl of Northumbria | Arriva Shires & Essex | The Northumbria Anthology | Osric of Northumbria | English of Northumbria | Coenred of Northumbria | Arriva North East | Arriva London | Arriva Buses Wales | Aldfrith of Northumbria | Æthelred I of Northumbria | 2010 Northumbria Police manhunt |
There were also 13 for Northumbria Motor Services, 12 for Newport Transport, and ten each for Busways Travel Services (the former Tyne and Wear PTE undertaking), Cardiff Bus and Liverline of Liverpool.