The French Manche Department will not manage maritime links (via a public service contract) to the Channel Islands if the passport requirement is not lifted. An ID card should be enough.
Nearly half of the customers arriving in the terminal of Manche Îles Express did not have a passport, compulsory since October 1, 2021. Result: less passengers, and a loss of revenue for the ferry company.
The Manche Department has issued an ultimatum to lift the passport requirement by May 1, 2023, or they will not renew the service contract for 2024-2025.