Hello and thank you for your question. I will be very pleased to assist you. I'm a practising lawyer in England with over 10 years experience.
May I clarify whether you refer to registering as a company with a property Ombudsman or do you mean registering to actually become a property ombudsman please?
If the latter could you expand a little on what it is you are seeking to be able to do?
Alternatively do you refer to being able to complain to a property Ombudsman about service you have received from a company?