Hello. Message received! How odd that the previous ones did not get through.
Not to worry.
You are right to start with the local authority.
Your husband needs to be assessed just like any prospective adopter.
So you need to contact the adoption team.
There will be an assessment, then if successful a recommendation to panel for the adoption to take place.
The birth father will be contacted and given the opportunity to challenge the adoption, as it will remove his parental responsibility.
Your son's wishes will also be taken into account.
The final decision will be made on welfare grounds - in the best interests of your son.
But from your description it appears that there is a good case for a step parent adoption here.
Is there anything in particular I can clarify?
If you have further questions, you can always come back to me.
In the meantime, if you could take a second to provide a 5 star rating I'll be credited for my time spent responding to your question.