England
In my honest opinion a singer who influenced the UK immensely was the late great Cyril Tawney. He wrote many wonderful songs, which are sung probably all over the world today.

2nd place Roger Whittaker


Australia and the UK would be Martyn Whyndham-Read

2nd place Rolf Harris


America Peter Paul and Mary

Canada The McGarrigles Family

Scotland

The Fisher Family

2nd Jimmy Shand

Wales

Shirley Bassey & Tom Jones

Ireland
Dubliners