If your Hilton HHonors account is set to earn Points+Miles, and you credit to BA’s Executive Club, this is a lucrative promotion for hotels in the UK, Europe, Middle East and Africa.

The registration link is here.

Note however that this is on new bookings – my highlight in the second point.

Sign up and stay from 15 September 2015 until 13 December 2015, and earn Quadruple Avios when you stay at participating London Hotels within the Hilton Portfolio, and Triple Avios at participating Hilton properties in the rest of Europe, the Middle East and Africa.

Terms and Conditions:

To be eligible for this promotion, members must enrol with Hilton HHonors ,select British Airways Executive Club Avios as their earning.
•All HHonors terms and conditions apply. See full terms and conditions on HHonors.com
•Offer available for new bookings made between 15 September and 13 December for stays from 15 September until the 13 December 2015. (“Promotional Period”) at participating Hilton Portfolio hotels in Europe, the Middle East and Africa only. Click here for a list of participating hotels. Quadruple Avios is applicable for stays booked and completed at the Participating Properties in London. Additionally triple Avios is applicable for stays booked and completed at the Participating Properties across the rest of Europe, Middle East and Africa at any [rate except those through wholesale/tour operateor packages; contracted crew rates; travel agency discounted rates; stays secured utilizing Hilton Grand Vacations Club and Hilton Club timeshare programs. Hilton Grand Vacation marketing packages with a sales presentation requirement, complimentary or barter rooms; NET Group rates; Series Group or IT Group rates; third party websites bookings (irrespective of rate paid); and ‘opaque’ channel bookings where the brand may or may not be known at the time of purchase.] A stay is defined as consecutive nights spent at the same Participating Property, i.e. from check-in to check-out irrespective of the length of stay.
•Offer may be applied to one standard guest room per stay, Eligible Participant, based on double occupancy during the Promotional Period. There is no maximum on the number of stays per Eligible Participant during the Promotional Period.
•Offer is subject to availability, advanced reservation is required. BAEC membership number must be quoted at the time of booking.
•Reservations can be made at www.hilton.com
•Bookings need to be guaranteed by credit card

So I’ve rebooked stays that I have coming up just to make sure that they earn. If you have pre-paid rates or the rates have changed, you’re out of luck I expect.

To make it more problematic, the list of participating hotels does not work!