A VPN extends a corporate network through encrypted connections made over the Internet. Because the traffic is encrypted between the device and the network, traffic remains private as it travels. An employee can work outside the office and still securely connect to the corporate network.
Scotland, in common with the rest of the UK uses Pound Sterling (GBP) divided into 100 pennies (or pence). Scotland uses banknotes issued by three different commercial banks;- Royal Bank of Scotland, Bank of Scotland and the Clydesdale Bank. Bank of England banknotes are rarely accepted in Scotland.
Anyway there is only one currency in the United Kingdom- the British Pound. Ireland the Republic of course is on the Euro like most of the E U. Wiki about pound Stirling notes. Coins are the same in Northern Ireland and in the rest of UK, so no problems there. Bank of England notes circulate freely in NI. Notes you get from ATMs and in change in NI are mostly local notes printed in NI.