Interestingly, just received a notification from Heathrow Rewards about their partnership with Rocketmiles ending from next week:
"Heathrow Rewards update Rocketmiles will no longer be a partner of Heathrow Rewards. Effective from 22 October 2025, you will no longer be able to earn Heathrow Rewards points through Rocketmiles. Any bookings made up to and including 22 October 2025 will be honoured by Rocketmiles**.

(**If you have an existing Rocketmiles booking, it will not be affected by this change. For queries about existing bookings, please contact Rocketmiles directly or Heathrow at www.heathrow.com/contact-us.)