Yeah, it’s the red 40: https://www.commodious.co.uk/knowledge-bank/food-safety/food-additives

Edit: you’re likely right about the mineral oil too: https://www.legislation.gov.uk/uksi/1966/1073/body/made?view=plain#:~:text=Prohibition of mineral hydrocarbon in food&text=(b)no person shall sell,food containing any mineral hydrocarbon.

And being allergic to Red 40 sucks. It causes severe breathing issues for me. I developed the allergy later in my 20’s, probably from eating it too much.