Hi everyone I've never made thread before but here's my first. On October I was travelling from Luton airport to Luton I quickly purchased my ticket and didn't realise I had selected the 16-17 instead of 16-25 railcard (which I have). The gates at Luton airport were open because of peak times so I went past without scanning and got on my train. When I arrived at Luton I was asked by the inspector to show my barcode ticket which I did. Then was asked to show my railcard upon showing she told me I have an invalid ticket and my details were taken down. Just today I received this letter I have already written my response which I should've done after advice from this post. Thank you