Thanks for the recommendation, Pete...
Unfortunately it looks like they don't have them in white at the moment plus when I tried to add the yellow ones to my cart (just for the hell of it) I got this message:
"This Supplier/Shipping Company does not deliver to your selected Country/Region"
I'll do some googling to see if I can find another supplier...
Oh, you probably already know this but using these globes will render your bike unroadworthy...