I don't live in UK so haven't signed, but I am actually quite shocked that this is happening...in a first world country.
It is very much a reality here in Africa. There are a lot of schemes here to get girls back into school instead of missing school for a week each month. But it is a reality, not every scheme is going to reach out to every single girl in need. The need is much more than the assistance. For the life of me, I cannot understand why sanpro is not given out free in clinics like condoms are. Girls do not choose to have a period. And we don't have cheap ranges like you do, no no-name brand towels, the cheapest pack I have found is a pack of 8 (Ultrex not sure who makes them but says made in UK) I convert them to around 1pound25 per pack (apologies I don't know where pound sign is on here..). If a girl asks in school, she will be given for the day... but it will take a lot for an embarrassed young girl to go to teacher every day, every month. These girls are using rags and rinsing them out in the bathrooms at break. Its is heartbreaking. And not only that, its not hygienic either. But what other choice do they have.
One of our large pharmacy chains had started an incentive, you buy a packet and pop it into the collection bin at the door. But its is not enough. They need a constant supply, not just one pack every now and then.
I have a teenage daughter myself. Until she started her period, I didn't realize how easy I have had mine. Heavy flow and painful. She needs to use a good quality pads otherwise she will use twice as many cheap ones. There is a initiative to hand out locally manufactured mooncups but there has been a lot of opposition really. Pads are the most commonly used form of sanpro used here, probably as they are the cheapest option day to day.