Question Author
My employer’s anti-bribery policy requires me to declare any gifts I receive above the value of £25 (€30); my manager would then give approval for the gift (or not), and may elevate it within the company for a decision.
I very much doubt my employer would permit me to receive a gift of £150,000. But it is interesting that a large percentage of ABers see nothing wrong in receiving such a gift (clearly their morals are closely aligned with those of Boris).