What I have failed to understand is why beer has moved to 500ml bottles, but the two biggest brands of cider (Bulmers and Magners) still sell pints, although they label the bottles 567ml.
As a home brewer, I tend to favour cider bottles over beer bottles for their size; by the time a little has been lost to the sediment that is inevitable in a bottle conditioned beer, a 500ml bottle leaves a very sadly short looking drink in my pint glass (almost like an American pint

) A further benefit of the cider bottles is that they tend to have conical or near conical necks so there is less tendency for bubbling, as air sucks back into the bottle, to disturb any light sediment. I've spent a few happy hours over the past few years rummaging through pub bottle bins looking for the best bottles.
Sorry, going waaaaayyyy off topic now, so I'll shut up.
Have fun (or "happy brewing" as I sign off on
another forum),
Ian.