Most destinations have now lifted any restrictions related to Covid-19, however, please double check before you travel.
It is possible that the destination you have chosen to travel to, may change its requirements for entry between booking and travelling.
The following site is a very useful resource that offers up to date information on exit, entry, and transit requirements for virtually all destinations. We recommend that you visit this site periodically in advance of travel, to keep informed of the latest requirements https://apply.joinsherpa.com/travel-restrictions
It is also possible that the UK Government assessment of travel risks to your chosen destination may change on multiple occasions between booking and travelling. This is explained further in this document under Travel Guidance.
It is your responsibility to make sure that you are compliant with any rules regarding leaving the country, entering your destination and arriving back into Ireland.
The best source of information on these requirements comes directly from the Irish Governments main travel advice site: