As far as I know, beale isn't wrong (unless anybody knows better). This question has come up before. The problem seems to be that, in the early 1960's, there were four different music charts on the go. "Please Please Me" reached number 1 on three of them. Unfortunately, the one in which it didn't reach number 1 is actually the chart used by the Guinness Book of Hit Singles (which, in turn, has been used by lots of other people). I don't know why this fourth chart was the one used.