Hi Julie, as you are UK based this company will make any diameter and up to 6inches tall as standard.
www.foamcutting.co.uk
Also www.dummiesdirect.co.uk will cut to any size you want but they can’t be ordered online, only by telephone, they will give you a quote.
I have used both of these companies and they are fine.
I hope that this helps. x
Pamela - http://madewithlovebyme.wordpress.com/ www.facebook.com/PamelaMcCaffreyCakes
