At £500 I do think they would sell out in a matter of hours.. To maintain social distancing. lets say 150 seats on offer at £500 each would generate £75,000 income.....for a flight that has to happen anyway! Up-thread I read BA has had some negative publicity recently re taking delivery of 787 / 350 whilst making thousands redundant (I haven't read this myself)....what great PR BA could create out of this though....maybe a few seats on each flight being auctioned for charity etc etc.
Daily Mail
"BA infuriated their soon to be redundant staff by flying meaningless jolly flights for wealthy plane spotters"