What are two artists who have had at least 2 Christmas no.1 singles?

Two artists who have achieved at least two Christmas No. 1 singles in the UK are Cliff Richard and The Beatles. Cliff Richard topped the charts with "Mistletoe and Wine" in 1988 and "Saviour's Day" in 1990. The Beatles secured the Christmas No. 1 spot with "I Want to Hold Your Hand" in 1963 and "I Feel Fine" in 1964.