https://www.gov.uk/married-couples-allowance/overview

You can claim Married Couple’s Allowance if all the following apply:

•you’re married or in a civil partnership
•you’re living with your spouse or civil partner
•one of you was born before 6 April 1935

What is the point of this?

Or:
Marriage Allowance

1. How it works
Marriage Allowance lets you transfer £1,060 of your Personal Allowance to your husband, wife or civil partner.

This reduces their tax by up to £212 in the tax year (6 April to 5 April the next year).

To benefit as a couple, you - as the lower earner - need to have an income of £10,600 or less. You can calculate how much tax you’ll pay as a couple.

You can’t transfer more or less than £1,060.

Who can apply
You can get Marriage Allowance if your partner’s income is between £10,601 and £42,385.

What a ridiculous couple of breaks. Not that anyone should get a break for getting married. These are fucking shite!