Both Scotland and Northern Ireland voted to remain in the EU. Scotland has already voiced it's displeasure and has brought up the independence referendum. Northern Ireland's best option would be to reunite with the rest of Ireland, though there is so much bad blood between them it may be difficult. There certainly is a real possibility that those 2 will break from the United Kingdom in the coming years if the Brexit is particularly harmful to them.
Both Scotland and Northern Ireland voted to remain in the EU. Scotland has already voiced it's displeasure and has brought up the independence referendum. Northern Ireland's best option would be to reunite with the rest of Ireland, though there is so much bad blood between them it may be difficult. There certainly is a real possibility that those 2 will break from the United Kingdom in the coming years if the Brexit is particularly harmful to them.