Filton sits just north of the city boundary, in South Gloucestershire. Everything about daily life points at Bristol — the shops, the commute, the postcode people give out — but school admissions run through a different council, with its own application form and its own admissions rules.
Neither South Gloucestershire nor Bristol has state grammar schools, so selective entry from Filton means one of two routes. The nearest state route is the grammar schools’ entrance test up in Gloucestershire, which from 2027 is sat in July of Year 5. The other is the independent schools around Bristol, which set their own entrance papers. Either way, the decision is really made in Year 5.
None of that changes what a lesson looks like. It changes which deadline you are working to, and it is worth settling before anyone commits a year to 11+ preparation.