Marriott Hotels & Resortswww.marriott.com
Corporate/Promotional Rate: TVL
The availability of travel industry rates is excellent with Marriott, however the more expensive properties tend to offer less of a discount in comparison to the mid-range offerings. Reservations can be cancelled up to check-in day.
Hilton Hotels & Resorts
Promotion/Offer code: AL
Hilton have recently updated the travel agent offer site and I find this doesn't work as well as going directly to the main www.hilton.com page and under special rate codes use the AL code as noted above. If you can't find availability at a travel industry rate, it is worth checking closer to the time for freed up capacity at these rates. Rates can also be cancelled before the check in date without penalty which is fantastic for standby travel.
Starwood Hotels & Resorts
including LeMeridien, Westin, Sheraton and W Hotels and more...
The above link takes you to the landing page for the search and no special code is required when booking through the link.
Hyatt Hotels & Resorts
Special Offer code: TIRT
In cities with Hyatt properties, this can provide a great discount over rack rates. Reservations can also be cancelled up to check-in date which provides a great amount of flexibility.
Yotel Gatwick and Heathrow
Phone - +44 207 100 1100
Email - email@example.com
By contacting the reservations team directly, both locations offer 12 hour stays for £40 for airline employees, which is a great discount over standard rates. Note that the rates are only applicable for overnight stays and day rates are not available. Book in advance to ensure availability.