UK power adaptor advice

[Zarzino]

Hi,

I've got a Dreamcast in the post from an ebay auction, It's my first Dreamcast and it doesn't have a power adaptor. I have a number of cables that will fit the ac slot however I don't know which fuse the plug would need. I've been told it may need a 13amp fuse and the power supply is in side the console so it doesn't need a box on the power wire.
If anyone could let me know which UK fuse the plug would require that would be a massive help.
Thanks