C'mon Pete, yer 'avin' a giraffe. Robbie Williams the best entertainer in the world? You've spent much time watching X-lax Factor mate.
You can't say "it's a fact" anyway, it's not. It's just your opinion and whilst I'm not saying you don't have the right to an opinion, it doesn't make it a fact.
Personally I feel his whole act/persona comes across as contrived. Everything he does (the live "proposal" for example) is carefully stage-managed and crafted by his management and his music is just catchy pop, again carefully (and skillfully) crafted by his management team, he's certainly no David Bowie or Elton John.
It's ironic that you say "
so lets here your arguments about Britains Greatest singer (old and dead excluded please)" a lot of the real legends of British music died well before reaching Williams' age of 35 -in that industry Williams is already "old", dying is the only stunt that he hasn't already tried to boost sales, but we can live in hope