I've just re-run your Post Office search. Pleasingly, the results were "Sorry there were no results matching your enquiry. 'lorem ipsum' "

Less pleasingly, the "lorem ipsum" alt attribute text is still there, in, for example, the source of https://www.postoffice.co.uk/savings-accounts/if-saving-for-a-car

Have the Post Office "fixed" this issue by excluding the term from their search results?