I am a Lithuanian living in the UK. I am planning to take a trip to Portugal in two weeks, and my 4 year old son's Lithuanian passport (EU citizen) will expire while in Portugal. I have contacted the embassy and there is no way that they would renew his passport in time.
He was born in the UK and has a British birth certificate. I was wondering if the border agency would accept an expired EU passport for a child who is accompanied by his parents with valid passports and a birth certificate to enter the country?