British equivalent for Cane sugar
If it only says "cane sugar" without any other qualifier, just use the normal white crystal sugar you have. There is a common attitude that cane sugar is supposedly superior to beet sugar (which is the prevalent sugar in Europe), although this might well be the result of successful advertising campaigns. In any case, if you use beet sugar, I am pretty sure nobody will notice the difference. 

If it says something more than just "cane sugar", (e.g. "light brown cane sugar") it could be Demerara or something else. But then your question is not answerable without describing the full term. 

See also The difference between beet sugar and cane sugar.