Emma Julia
You really need to get professional advice ASAP
If you leave it much longer the scenario's for you and the children are not good.
I'm not sure the CAB will be able to offer much, but still worth a try.
Also I really believe you should inform the Canadian Embassy as they may well provide some options given your circumstances.
Again, worth a try. ASAP
My view is that you should not keep your 'partner' in this loop he appears to be very unhelpful. Also I feel he will talk you out of it.
I am concerned and puzzled by his behaviour.
His actions do not support his words.
Of course I just do not have sufficient knowledge about your relationship with him and his with you. But based solely on what you have shared here on this forum, I do fear that he may well be deceiving everyone, including himself.
In one of your earlier posts you mentioned that 'His wife decided not to sign the divorce papers'
Again, this puzzled me. Given that he'd been living with you for 8 years in Canada, his divorce petition should have been uncontested.
What I mean is that after 5 years living apart the petitioner (your partner) issues the
divorce petition (5 years separation) and the divorce papers do not need the agreement
of the respondent.
On his visits to UK from Canada did he live with his wife?
Is he living a double life.
Emma Julia, please start taking some independent actions. Your legal position all round is precarious.