I agree with Martin Redfern’s comments regarding the issue of a hard border cutting main-land Britain in half should Scotland leave the UK (Letters, 18 June). As of now shopping trips, family visits, getting to work or a night out between, for example, Northumberland and the Scottish Borders mean nothing but driving along the road from A to B, a normality enjoyed by generations. With separation, this would become international travel crossing a full-on international border. To many of us, this will sound like a crazy idea. Moreover, making national borders obsolete is one of the main objectives of the EU with Freedom of Movement being one of its more recent achievements- something people in Britain, whether in Scotland or England, have enjoyed for generations. Undoing this could actually be seen as an un-European, anachronistic concept at odds with the same European values Nicola Sturgeon and the SNP purport to hold so dear. Regina Erich, Stonehaven, Aberdeenshire.