If an individual needs to evidence their vaccination status they must go to the Gov Website where they will be instructed to download the NHS App which will allow you to see your vaccination status. The website site is below:
If the individual does not have a smart phone / IT Access they can call 119. This must be at least 5 days after their 2nd vaccination. They will have a letter posted to them.
Please do not advise to contact the GP practice as they are unable to provide any evidence.