I have same with local Air 21 which is Federal Express in rest of the world. Expensive, but never let me down!
Well this seems to be a Grey Area, I was Pensioned in 2013 but my First "LC" was 2016, seems to be a fairly new thing for Overseas Residents. Best to check with DWP as it may be a personal thing based on your NI number. Sorry I can't be more specific.