You can use an EU driving licence in the UK until it expires.
If you have an EU driving licence, you may use the licence for as long as it is valid. If you have a licence from outside the EU, you may only use it for the first 12 months that you are in the UK. After this time you must obtain a UK licence.
It is not possible.
you can use an licence from anywhere at any place.
no licence is required for off-road use. A quad can be driven on UK roads with a car licence.
Not if you are a legal Canadian resident.
You can use any non-EU driving licence in the UK for the first 12 months of your visit. If you are in the country for longer, you will need to get a UK driving licence once those 12 months are up.
If the question is "Can you use a UK driving licence in Saudi Arabia" the answer is yes. But the following applies You need a full UK licence to hire a car Women are not allowed to drive cars in Saudi Arabia. An International Driving permit is recommended.
You can use your full UK or any other valid EU licence to drive in Ireland. If you wish to remain in the country then you will need to exchange your licence for an Irish one. Note that this only applies to "FULL" licences, if you have a "provisional" or "learners" licence you will need to do the Driver Theory Test and get a Learner's Permit which is valid for two years but you can only drive if accompanied by the holder of a full licence. As well as EU licences the following full licences can be exchanged for a full Irish licence, Iceland, Liechtenstein, Norway, Australia, South Africa, Japan.
5 Years
Yes you can, provided you hold a full valid UK or other international full driving licence that have no restrictions on where you can drive.
Almost certainly. Check with the Ferry company.