They crossed the Irish Sea in their millions seeking a new life, and in the process reshaped Britain, building motorways and cities, filling churches, clubs and pubs, and stamping their identity on the landscape and the culture.
The Irish came in waves that started in the 19th century and continued through the Great Depression, the post-war boom, the swinging 60s, the Thatcher era and into the 21st century, one of the great migrations.
