Thanks for the welcome and for both of your responses.
I don't have any access to any other private routers at the moment but I'll try the public hotspot tomorrow.
I do understand that these are budget tablets but from what I've read even top of the line phones / tablets are having issues since upgrading to ICS 4.0.4.
Many people are trying to figure out how to rollback to an ealier version because of the problems the upgrade has caused.
I don't think I have that option (unfortunately) because the tablets came with 4.0.4 installed.
I will look into it though, I'm running Gingerbread on a HTC phone and it works perfectly.
I'm not sure I understand what you mean by "guest account".
I've checked the Belkin control page and can't see anything that looks like that might be the case, but then again I don't really know what I'm looking for.
Belkin staff are back on deck tomorrow so I'll give them a call and see if they've got any suggestions.
It's probably one of those really simple things and I'm just not seeing it (fingers crossed anyway).