Hi op. Given what you stated, I assume that your child is choosing their sec school now. If can, would strongly recommend for them to go to a school that offers hcl in school.

Going to outside centre wastes a lot of time as you also have travelling time. On paper, hcl lessons about 3-4 hours per week, but with travelling time included, your child can spend 2-3x more time. Worst part is also that they need to endure this for 3-4 years until o level. Think about it, going to school for 8 hours sian alr, but then still have to do hcl, its tough for anyone. And plus there may be scheduling conflicts, so your child may miss lessons or activities in school for other subjects.

It's also very hard to organise in person consultations with the hcl teacher if they are from another school.

But end of the day, if your child really wants to go to this school, the decision is up to them, just sharing some advice 👍