Join Date: Oct 2006
Location: London, UK
Programs: BA Gold, VS Silver, SQ Silver, IHG Plat Amb, Hilton Gold, Marriott Plat, Accor Silver, Radisson Prem
Posts: 16,872
Put your Heathrow Rewards card in the ticket slot after the ticket before payment.
If that doesn’t work, send the receipt to the customer service email address and they will credit the points due.