# EVIDENCE

- [Demand for our Services](/open-letter/evidence/demand.md)
- [Our Value](/open-letter/evidence/value.md)
- [Cost Effectiveness](/open-letter/evidence/cost.md)
- [Testimonies](/open-letter/evidence/testimonies.md): We have received at least 586 testimonies, updated 15:00 on Friday 29th January 2021. We highlight only a few selected testimonies here.