Just a quick update. My potential employer has advised me I will need to get a statutory declaration stating no objection from the birth father. As I've stated, he is not able to be contacted for permission, believe me, we have tried and exhausted all avenues to track him down.
For those who have said a custody order or notice of consent were not required, what documents did you use to obtain permission for your stepchildren?
Please feel free to PM me if you feel it more appropriate.
Again, many thanks.