Thank you for your question
My name is Clare
I shall do my best to help you but I need some further information first
How old is your son - and have you always lived in Shropshire?
When did your ex move to London - how was the travelling organised prior to this?
Could you make Birmingham once a fortnight (just one way)
My apologies for the delay
It is NOT your responsibility to cope with the change of arrangements caused by his move.
The distance involved means that it is not totally unreasonable for him to ask you to take some part in the travel arrangements - but offering to go to Birmingham on either the Friday or the Sunday would be a reasonable offer in the circumstances.
If he applies to the court they will look for a solution that is reasonable - and the reasons you have given for not driving to Oxford are clear and understandable.
The only other thing I would look at would be the possibility of using a train/car option with you taking him to the station.
Please ask if your need further details
That of course depends on the route and the child - a straight route with no changes for a responsible child and not at night could be reasonable