See below for the list of those companies currently registered to attend.

@luxurylondonguy
AIG
American Airlines
Areka Consulting
Asemblr
AstraZeneca
Axa Partners
AXA XL
Baillie Gifford & Co
Bank of America Merrill Lynch
British American Tobacco
British Airways
British Council
Brunel
BuroHappold Engineering
Carey Worldwide Chauffeur Services
CDS Groupe
CGG Services (UK) Ltd
Citrix Systems
Continental
Control Risks
Dalata Hotel Group
DiamondAir International
Deutsche Hospitality
Dyson Ltd
easyJet
Edwardian Hotels London
Electronic Arts
Eli Lilly and Company
Enterprise Holdings
Enterprise Rent-A-Car & National Car Rental
EY
Grant Thornton International
Hyatt Hotels and Resorts
Inmarsat Global Ltd
Jaguar Land Rover
Jet Airways
KDS
Kempinski Hotels
Kimberly Clark
KKR & Co Partners LLP
London City Airport
Marriott Hotels International Ltd
MBDA
McKinsey & Company
Melia Hotels International
Morgan Stanley
Mott MacDonald
National Oilwell Varco
Netcracker Technology EMEA Ltd
npower
NYS
OCallaghan Collection
Oil Spill Response Limited
Omnicom Group
Parker Hannifin Manufacturing Ltd
Pearson
Pegasus
Procorre
Radisson Hotel Group
Refinitiv
Registration status is in completed
RELX Group PLC
Rocco Forte Hotels
Royal Bank of Canda
RWE UK (npower)
SABIC
Sales Trip
Shell
Sirius Travel Sourcing
Sixt rent a car
Sopra Steria
Specsavers Optical Group
SSE
Stanley Black & Decker Inc
Synamedia
Synergy Global Housing
Taj Hotels Palaces Resorts Safaris
Tata Steel
The Apartment Service
The Business Travel Magazine
The Collection Hotels
The Curtain
The Landmark Hotel
Tokio Marine Kiln
TRIPBAM
UBS