Our children are at a rural prep school which they love and the timetable includes 1 hour of sport per day. We and they are very happy with this.
We are looking at senior schools for Year 9. It seems the boarding schools still provide almost daily sport but the day schools drop to twice a week in Year 9 and possibly once a week in Year 10 (if you do not do Sports GCSE). The day schools have a shorter day and I assume this is part of how they achieve this.
Both of our children are quite sporty and we consider this as a part of a rounded education. Is it normal to only have 1 PE lesson / day a week in years 9 and 10? Is the expectation that parents will drive children to sports clubs after school (we are rural and I work full-time so the logistics of this is not straightforward).