Not difficult to spot the philanderers, the Holy Romans and the cuckolded on this thread is it?
My guess is the husband knew exactly what was going on and set it up, as he did, for maximum effect and to prevent the 'lady' from making a quick trip to staff travel while he was away, grabbing the kids and buggering off to Liverpool where she would have employed the ex Mrs McCartney's lawyer to secure a lovely , comfortable home and future for herself, kids and boyfriend at the ex husbands expense.