History of UK By Laureline 500 BCE The Celtics arrive in Britain 400 The end of Roman rule 1707 UK is formed by Scotland and England Period: 1801 to 1921 The UK included all of Ireland 1921 Republic of Ireland Only six counties remained within the UK, the rest became the Republic of Ireland Jan 25, 2000 Burns night célébration of the birthday of Robert Burns, national poet Mar 17, 2000 St Patrick's day public holiday Apr 23, 2000 St George's day Jul 12, 2000 Anniversary of the Battle of the Boyne public holiday Nov 30, 2000 St Andrew's day public holiday
