It's no surprise - English law is separate to Scottish law. National in this instance means England, rather than Great Britain. There are many instances of legal anomalies between England and Scotland and this is just one. There's not much you can do about it. The expense and hassle of travelling from Inverness to Norwich for the course seems extreme for three points, but you may decide that that it's worth it in the long run. Is it possible to arrange something further north? Newcastle for instance? Still a long way to go, but easier to get to than Norwich.