The design on the official rubber stamp used on the divorce certificate is the monarch's coat-of-arms, showing the royal prerogative in dispensing justice, in this case at family court level.
Whilst discussing the offer of mediating, John Major (Jonny Lee Miller) is served a meal of sausages, mash, and peas, by his wife Norma (Flora Montgomery). Peas were a staple food of the Majors in "Spitting Image", representing a standard, if rather dull vegetable for the figuratively and literally grey John Major character.