London crossing signs and diversity in marriages

Walking from HM Treasury to LSE, a quarter turn around Trafalger Square shows that British traffic wardens have a relaxed view of modern marriage--here are two walk signs (or maybe go-ahead signs) that seem to celebrate both traditional and same-sex marriage.  (I was in a bit of a hurry so I didn't have time to circumnavigate the square and look for other variations on this theme...)