Are Lingus website says VALID passport.
" Travel between Ireland and the UK or UK Domestic travel Citizens of Ireland and the UK must carry some form of official photo identification. Note: In order to travel between Ireland and the UK with photo identification other than a passport, passengers must have been born in Ireland or the UK and also be a citizen of either country. The following forms of photo identification are acceptable:
Valid Passport Driver's licence with photo International student card National ID card / Government issued photo ID cards Health Insurance cards with photo / Social security cards with photo Bus pass with photo Work ID with photo
Citizens of Ireland and the UK under the age of 16, do not need a photo ID, if travelling with their parent/guardian. Citizens of countries other than Ireland and the UK must produce a valid passport and visa where applicable, for travel between Ireland and the United Kingdom."
So I'd say no.