There is an inequality between what financial help is offered to self employed mothers to be of birth children vs adopted children. 

According to the government website:

You might get Maternity Allowance for 39 weeks if one of the following applies:

you’re employed, but you cannot get Statutory Maternity Pay
you’re self-employed and pay Class 2 National Insurance (including voluntary National Insurance)
you’ve recently stopped working
In the 66 weeks before your baby’s due, you must also have been:

employed or self-employed for at least 26 weeks
earning (or classed as earning) £30 a week or more in at least 13 weeks - the weeks do not have to be together
You may still qualify if you’ve recently stopped working. It does not matter if you had different jobs or periods of unemployment.

THIS DOES NOT EXIST FOR SELF EMPLOYED ADOPTIVE MOTHERS.

These women should be offered the exact same financial help and not penalises for not giving birth to their children. Parenting is still parenting, regardless of how the child comes in to the family. 

This is grossly unfair towards self employed adoptive mothers.