I'm recently separated from my husband and to cut a long story short he has told me that he wants to see the children every other weekend. So not much really considering he lives 20 mins away. I would like us to come to an agreement financially about how much money he contributes each month. My calculations come to 300 pounds each a month. I know he will not be happy with this so I am thinking of using a mediator. How does this work? The kids are aged 9 and 10 by the way.