I just replaced my fuse box with one off E-Bay, there are 2 great fuse boxes on E-Bay for this, This one is 6 way which gives you you 4 mains and the spare with an extra spare .
eBay item number:
E-Bay item # 273238303412
This one is an 8 way, excessive yes, 2 more extra fuses because I know how some people are about fuses.
eBay item number:
E-Bay item # 252930163095