Can I travel to the UK (including Northern Ireland) with my Irish visa?

No, you cannot travel to the UK or Northern Ireland with an Irish visa. You will need to apply to the UK authorities for a separate UK visa.

If you are travelling to the Republic of Ireland, and you intend to also visit Northern Ireland and return to the Republic, you must obtain a multiple-entry Irish visa and a UK visa.

If your main destination is Northern Ireland, but you arrive in and depart from the Republic of Ireland, you must first obtain a UK visa, and then a multi-entry Irish visa.

Northern Ireland consists of Counties Antrim, Armagh, Derry, Down, Fermanagh and Tyrone.