If you are referred to hospital or other NHS premises for specialist NHS treatment or diagnostic tests by a doctor, dentist or another primary care health professional, you may be able to claim a refund of reasonable travel costs under the Healthcare Travel Costs Scheme.
Please follow the link to find out who is eligible for the scheme and how to make a claim: https://www.nhs.uk/nhs-services/help-with-health-costs/healthcare-travel-costs-scheme-htcs/