The travel eligibility assessment will be based on the ability to secure a place at the nearest school at the time of the relevant admissions round.
If the nearest school is undersubscribed with places available, then it will be the nearest suitable school for travel purposes, and free travel would not be provided to an alternative school that is further away.
If the nearest school is fully subscribed without places available, then the council will need to assess if the child could have secured a place had one been applied for.
School admission authorities must provide ranked lists of all applicants to the council. If parents do not list the nearest school or list it as a second or lower preference, the council can assess whether a child would have been offered a place at that school. This will be done by comparing the child with the last child to be offered a place at the school and determining which of them would have higher priority. This will often be a straightforward matter of determining which child lives closest to the school.
The nearest suitable school would always be the nearest school with places available. So, if the child could not secure a place at the nearest school, then the transport eligibility assessment would be based on the next nearest school, and so on.