You can apply for a refund if the equipment changes and you don't like your new seat assignment.
From the paid seating terms and conditions:
Refunds
- Paid seating is non-refundable, unless:
- British Airways changes your seat to an alternative seat and you are unsatisfied with the alternative seat;
- British Airways cancels your flight;
- you become ineligible to sit in an exit row and you inform us at least 48 hours in advance of scheduled departure of your flight; or
- you have paid for a cabin upgrade and do not wish to pay the difference to select your seat in the upgraded cabin.
The above does not affect any right to a refund you may have during a “cooling-off” period, if and to the extent applicable under local law. Details of this under Israel’s Consumer Protection Law 1981 are set out in our legal information.
- For the avoidance of doubt, paid seating will not be refunded if you:
- cancel your flight;
- are involuntarily upgraded;
- are considered unsuitable to sit in the seat type you have selected;
- accept a voucher towards a future booking that includes paid seating (see further the relevant voucher Terms and Conditions); or
- have booked a British Airways operated flight marketed by another carrier and choose to move to a different flight.
https://www.britishairways.com/en-gb...sandconditions
Seat refund form:
https://www.britishairways.com/trave...ing_claim_form