I think that people who have private health insurance should receive some sort of rebate for this when they use the benefits of the policy.
Either they pay for it personally at great cost or is given as a company benefit which is classed a taxable. They are savng the government / NHS money for having this insurance.
Similarly parents paying for private education should receive tax relief on the payments they make and not have to pay additional fees for GCSE examinationsa nearly £300 on top in our case. They are saving the government and educaion authoritys thousands