As for actually being 100, companies house says otherwise - 1983..
Company Details
Name & Registered Office:
BRITISH AIRWAYS PLC
WATERSIDE
PO BOX 365
HARMONDSWORTH
UB7 0GB
Company No. 01777777
Status: Active
Date of Incorporation: 13/12/1983
Country of Origin: United Kingdom
Company Type: Public Limited Company
Nature of Business (SIC):
51101 - Scheduled passenger air transport
51102 - Non-scheduled passenger air transport
52230 - Service activities incidental to air transportation
52242 - Cargo handling for air transport activities
Accounting Reference Date: 31/12
Last Accounts Made Up To: 31/12/2018 (GROUP)
Next Accounts Due: 30/06/2020
Last Confirmation Statement Date: 31/07/2019
Next Confirmation Statement Due: 14/08/2020
Mortgage: Number of charges: 830 ( 695 outstanding / 135 satisfied / 0 part satisfied )
Last Members List: 31/07/2015
Last Bulk Shareholders List: 31/07/2011
Previous Names:No previous name information has been recorded over the last 20 years.
UK Establishment DetailsThere are no UK Establishments associated with this company.
Oversea Company InfoThere are no Oversea Details associated with this company.