When all spelling variations are taken into account, the second most popular boy's name in the UK in 2006 was Muhammad.
A mufti in a British mosque explains the name's global Islamic popularity as the equivalent of Jason for 30-somethings or Max for 5-somethings: “In Arab countries, the name Muhammad is said when you don’t know the name of someone."
That's great, but don't try that at home, kids! Especially if you live in a country so carefully attuned to racial insensitivities the white parents let their kids play with Golliwogs for a hundred years.
Muhammad is No 2 in boy's names [timesonline.co.uk]