and in some areas unlawful as the local authorities have responsibility to provide the public services. so they will be provided, just not in the initial assigning areas to the local plan.
i would presume that 400 houses on that site might be accessed from Mile Oak road. unless the plans say otherwise, and if they did then thats the sort of thing to make a requirement of planning.
no, im not familar with the area, but i am familar with the pattern of complaints. everyone is...
oppose it if you wish, just dont complain about house prices or availability for your children to live locally.
access, school places, doctors etc are not reasons to object to planning, they are items that need to be addressed, conditions to attach etc.