[Kymmy]

The documents dated 2013 so the bottom section won't take into account the tax/pensions of married same sex couple but it would presently read the same as the civil partnership side due to the tax rules having to have a primary tax earner. All the other entries just dictate the fact that a civil partnership can't be called a marriage and vice-versa.

In general there is literally no difference apart from the first one to get old or die is denoted as the primary (male for some archaic reason) for tax/benefit purposes