Hi there. I am having much trouble getting clarity. I'm not sure who to ask and which "immigration lawyer" to trust. So here I am...at your mercy. 
I am a Canadian citizen living permanently in the UK. I want to sponsor my partner and her two children (14 and 17) for all of us to move to Canada asap. The childrens dad has very little do do with them but refuses to give permission to move them. Their mother has sole PR. I believe, under UK law, legal orders in this regard can not be made for children aged 16 or over. We want to move in summer 2018 when the 14 year old will be 3 months shy of her 16th birthday.
What is the minimum requirement of Immigration Canada to allow moving both kids?
If not this forum, who should I be asking about this?
Any other advice?
Many, many thanks in advance.
Brian

I am a Canadian citizen living permanently in the UK. I want to sponsor my partner and her two children (14 and 17) for all of us to move to Canada asap. The childrens dad has very little do do with them but refuses to give permission to move them. Their mother has sole PR. I believe, under UK law, legal orders in this regard can not be made for children aged 16 or over. We want to move in summer 2018 when the 14 year old will be 3 months shy of her 16th birthday.
What is the minimum requirement of Immigration Canada to allow moving both kids?
If not this forum, who should I be asking about this?
Any other advice?
Many, many thanks in advance.
Brian