When the NATS site flags up:
Error parsing route. Please enter a valid route string.
why isn't there an associated help feature? And what the heck is 'parsing a route'. No speako geeko!!
Also, why won't it accept, for example, SWB (Shawbury) as a waypoint? It knows about the SWB in Louisiana, but not the one in Shropshire, it seems. So you have to enter 5247N00239W.....or was it N5247W00239?
A UK route 'string' should be able to understand
any published UK navaid included as a waypoint.