The EHIC was never a replacement or substitute for having travel insurance in place, it doesnt cover you for flight/holiday cancellations, stolen items, repatriation in the event of death, private medical facilities or all types of medical interventions. The current EHIC will only become invalid in the event of a no deal or if it wasnt written into the withdrawal agreement.Remembering that all those good people who voted Brexit have now cost us our EHIC card, meaning insurance companies can charge us what they like, may or may not cover us for covid (or similar) and may or may not cover us if we have had covid.