In 2026, if you are using a British Airways Executive Club Companion Voucher (earned via an Amex card), the policy remains that the primary traveler earns Tier Points and Avios as usual, but the "companion" does not earn anything. This is because the companion’s seat is considered a "Reward Flight" seat, which generally does not qualify for points. However, a 2026 "pro-tip": if you use the voucher for a "Part-Pay with Avios" booking rather than a pure Reward booking, the rules can change—but standard companion voucher use is a "Buy One, Get One" for the price of Avios, meaning only the cash-paying or Avios-deducted primary flyer gets the status-building Tier Points. If your goal is to reach Silver or Gold status in 2026, you must ensure your own seat is the "paid" (or primary) portion of the voucher booking to ensure the points hit your account.