Citylink is situated in Glasgow City Centre.    
Address - Citylink Coaches, Buchanan Bus Station, Killermont Street, Glasgow G2 3NW
Telephone number  - (44) (0) 8705 50 50 50

Visit website.

**********
Arriva is registered in Sunderland and serves all of Europe.   
Address - Scotland & North East, Arriva, Freepost NT 2040, Newcastle upon Tyne NE2 1BR
Telephone number - (44) (0) 0844 800 44 11

Visit website.

**********
First Bus Group is based in Aberdeen.  
Address - First Bus Group, 395 King Street, Aberdeen AB24 5RP
Telephone number -
44 (0) 131 333 1000

Vist website.

**********
Stagecoach is registered in Perth, Scotland.  
Address - Stagecoach, 10 Dunkeld Road, Perth PH1 5TW, Scotland
Telephone number - 44 (0) 871 200 22 33

Visit website.

**********
Megabus is based in Perth.  
Address - Customer Services, Megabus, Inveralmond Industrial Estate, Perth, PH1 3EE
Telephone number - 44 (0) 901 331 0031

Visit website.

**********

National Express is based in Birmingham.  
Address - National Express, Ensign Court, 4 Vicarage Road, Edgbaston, Birmingham B15 3ES
Telephone number - 44 (0) 8705 808080

Visit website.