Looking for English language babysitters

Hi dear moms

I am Mahdieh and have a 21 months old baby boy, he was born in London but we are living in Trhran now. I'm speaking with him in both Farsi and English language because May be we have to move to London in couple of years and he needs to speack English,  I've been looking for English language babysitter who can trustworthy and have good qualifications connecting with kids, I've been looking for the right person but I couln't find a good one, can someone help me with this situation?

And one other question, for the mamas who wants their babies speack English in kindergarten, where you are suggesting? If anyone know a good place please  share her experience with me too.

Thank you on advanced