No, The Irish pound is no longer a currency.
The Irish pound ceased to be a full currency in 2002 when Ireland switched to the Euro. In order to turn these into usable currency they must be traded for Euro at the Irish Central Bank in Dublin. A local bank in Ireland should be able to assist you with this.
Note however that due to their discontinuation, Irish banknotes will probably return a small premium if sold to a currency collector.
Firstly, it needs to be pointed out that Northern Ireland is in the UK. What you really mean, is can you exchange Northern Ireland notes in England, Scotland and Wales, which are the three other parts of the UK. The answer is yes. All four of them use sterling, and have their own notes. Some shopkeepers are reluctant to accept different notes, but they are legal tender. A bank in whichever place you are will exchange your notes for the more local notes without any problem.
Since 2002 Ireland have used the Euro as their currency, changing from the Punt(Pound). So yes, you can change Sterling to Euros.
If you refer to the Republic of Ireland pre-Euro Pound notes, you can only exchange them at the Central Bank in Dublin. If you refer to the Northern Ireland Pound notes issued by any of the Northern Ireland retail banks, you should be able to exchange them at any English bank.
Scottish notes are acceptable within the UK
Northern Bank, formed in 1809, is located in Northern Ireland and is one of the oldest banks in Ireland. It has many branches spread throughout the United Kingdom.
The UK consists of England, Northern Ireland, Scotland and Wales. The Bank of England is the sole issuing authority for banknotes in England and Wales. Scottish banknotes may be issued by the Bank of Scotland, the Royal Bank of Scotland and the Clydesdale Bank. Four Northern Ireland banks practice their right to issue banknotes, being the Bank of Ireland, the First Trust Bank, the Northern Bank and the Ulster Bank. The banknotes of all Northern Ireland and Scottish banks are backed by the Bank of England.
Northern Ireland is part of the United Kingdom and uses the same currency as the rest of the United Kingdom, the British pound (symbol: £, abbreviation: GBP).However, if you are visiting, you ought to be aware that while they accept Bank of England notes, they also have their own. Although these notes are legal tender in the rest of the United Kingdom, they are often refused in shops and other places where money changes hands; you may have to go to a bank to "convert" them into Bank of England notes.pound sterling
Scotland and England (along with Wales and Northern Ireland) share the same common currency, the Pound Sterling. The only difference is that some banks in Northern Ireland and Scotland are able to issue their own 'Scottish' and 'Northern Ireland' bank notes, but they all have exactly the same value as 'English' banknotes.
No
No!
Since Scotland is part of the United Kingdom of Great Britain and Northern Ireland it uses the pound Sterling (GBP £). Three Scottish banks are permitted however to print their own banknotes, which are often referred to as "Scottish notes". These bank notes will look diffrent from Bank of England bank notes but are normally accepted elsewhere in the UK. The three banks are The Royal Bank of Scotland, The Bank of Scotland, and Clydesdale Bank. There are four banks in Northern Ireland which also print their own banknotes. In the medium term there is a chance that the UK (and therefore Scotland) will adopt the Euro as it's currency. However there are no plans to do this yet.
National Westminster Bank owned the Ulster Bank in Northern Ireland, which has many branches there. National Westminster Bank is now owned by Royal Bank of Scotland, but Ulster Bank is still used as the brand there.
The trading name of the Northern Bank website is the Northern Bank. The proper name of Northern Bank is the Danske Bank of Northern Ireland located in the UK.
Ireland now uses the Euro, having done so since the 1st of January 2002. So if it is from before that, then it cannot be used in Ireland. It will have writing in the Irish language on it, so you would not see "Bank of Ireland" actually written on it. If it is a note from Northern Ireland, then it would have "Bank Of Ireland" written on it and it is legal tender in Northern Ireland and England, Scotland and Wales, but not in the Republic of Ireland. As a collector's item, they are of little value, as they are still in use. Many people would still have notes from the Republic of Ireland prior to the introduction of the Euro, so they are not of great collector's value either.