My hovercraft is full of eels!
The holder of the British favour card gets the rupee and only for leverage cards discarded or taken back into any player's hand via purge or honeymoon. Cleanup doesn't count.
Living Rules (B7.1) wrote:
British. IMPERIAL INVESTMENT - Gain one rupee after a card with the Leveraged Impact Icon is discarded or taken back into a player’s hand via Purge or Honeymoon.