Who knows - the worse place to come back into is the UK. I did take the birt cert for a while, I got told I was a bad mother, poor Christian, Catholics would not do this, in a muslim world I would lose my child etc etc.
I now refuse to take the birt certs and circa London City 2 weeks ago - got a female immi official once again explaining to me, that they were protecting the children and could I not see that not having the same surname was a warning to them.
I pointed out that their father whom they see less than 30 days per annum, has a foreign passport, family overseas - yet the do not stop him because he has the same surname. She could not see how effing stupid the rule is - kept saying yes but..., if you ahve BC - I told her I was sick of the immi official abuse and she said you do not get it do you.
I said I did but the stupidity of their selection criteria and the abuse I have suffered makes carryingt he BCs irrelevant.
9yr od DC piped up - you never ask our Dad, just Mum and we live with her!!!!
It was all fine and was never asked until evil new DP of EX reported me for possible abduction risk, along with other issues!!!