Updated and corrected version.
T1
Aviance - LY*/US
bmi - BD*/UN*/OZ*
Menzies - EI/NZ/OU/CY/FI/LO/LH/LX/TP
SAA - SA* (ops by Aviance)
United - UA
T2
AFSL - SU/KC/AF/HM/TS/MU/OK/LN/FV/RB/TU/IY
Alitalia - AZ/J2/B3/FB/JU/OA/HY
Servisair - AH/W3/AT/RO
T3
Air Canada - AC/CA/MK/BR/RJ
AA - AA/KE/KU
Alitalia - MH
ANA - NH#
Aviance - BG/XG/YK/ET/IB/9W/BI/SQ/T5/EY/WY
Cathay Pacific - CX$
Gulf Air - GF^
JAL - JL*
Menzies - AY
SAS - KF/EK$/SK/TG/TK
Servisair - AI/MS/IR/PK/QR/ME
Virgin Atlantic - VS$
Saudi - SV$
T4
AFSL - DL
Aviance - QF
BA - BA
KLM - KM/CO/KQ/IT/KL/NW/UL/JJ
T5
BA - BA
* - Ramp by Aviance
$ - Ramp by Plane Handling
# - Ramp by American Airlines
^ - Ramp by Alitalia