How Scottish 'Yes' May Impact 'Invisible Border'

For those that live along the invisible border that divides Scotland and England, daily life could change dramatically with a Yes vote in the September 18 referendum.

These communities, from Berwick-upon-Tweed to Coldstream to Gretna, will certainly feel the effect of any changes first.

While business and families could suddenly find themselves exporting and travelling abroad, currency is the top concern for most people.

Harry Frew, owner of Cheviot Trees - a farm based in Scotland, but so near the border it has an English postcode - says the uncertainty is damaging.

"Currency is our biggest issue," Mr Frew said.

"It would be a major impact on the business, a lot of extra admin and costs. If Scotland was to end up with euros, we would have to become used to invoicing in euros. Personally I think it is something we'd rather avoid."

Whether Scotland keeps the pound, adopts the euro or produces its own tender will determine the ease and cost of doing business on both sides if the Yes campaign bridges the six point gap with Better Together .

Cross-border workers may find themselves subject to two different tax regimes.

Eventually there could be two entirely different systems for borrowing, saving, buying and selling, working and retiring between the two countries.

Stephen Hay, head of tax at Baker Tilly in Edinburgh, said: "Of course people are going to be concerned about the pound in their pocket.

"A pensioner in Scotland will receive a pension, but the tax he pays on that pension could be higher or lower than a pensioner in England under independence.

"If the tax rate is higher in Scotland then clearly the less they'll have and equally if the tax rate is lower in Scotland the more they'll have, so I would imagine that will be a particular issue for a lot of people."

The Scottish Government plans to set the state pension at £160 per week, while the UK will set the new single tier rate next year, it's likely to be slightly lower around £148.

The current Scottish Government's White Paper also suggests that in the event of independence, it would review (and possibly withdraw) the UK Government's decision to raise the retirement age to 67 - keeping it at 65.

Home Secretary Theresa May has threatened checkpoints along the boundary should an independent Scotland pursue an immigration policy more lenient than that of the UK.

That could mean commuters would require passports.

The Scottish Government proposes one major simplification though.

An independent Scotland would replace the 95 ombudsmen that deal with a range of consumer issues within the UK: from roofing, to renewable energy, to financial services, with a single Scottish Consumer and Competition authority.