Hi Rod,

Thanks for the reply.

All servers are connecting as they should, so that's all good.

As you mentioned I've narrowed it down to one particular courier service, disabling them means quotes are returned as they should too. I've emailed the couriers in question and am currently awaiting a response to see if they are able to narrow things down.

Hopefully this won't be too long a wait...

Cheers,
Iain