Which single was Elvis Presley's first number one in the UK?

"All Shook Up" is a song recorded by Elvis Presley, published by Elvis Presley Music, and composed by Otis Blackwell. The single topped the U.S. Billboard Hot 100 on April 13, 1957, staying there for eight weeks. It also topped the Billboard R&B chart for four weeks, becoming Presley's second single to do so, and peaked at No. 1 on the country chart as well. It is certified 2× Platinum by the Recording Industry Association of America (RIAA).

The song also became Presley's first No. 1 hit on the UK Singles Chart, remaining there for seven weeks. Sales of the single exceeded two million, and the song was named Billboard's Year End number one song for 1957.