Many couples chose to get married in Ireland. It is a beautiful country with a lot to offer, and being only a short trip away from England, can make it a great location to get married. You may wish to get married somewhere other than England, but worry about holding the event abroad due to guests not being able to attend. You can easily travel to Ireland from England by sea or plane and tickets for both can be purchased quite cheaply. Many airlines offer return flights from Ireland for as little as £35.
When getting married in another country you will always have to consider transporting your guests. Are you going to arrange for travel for them or leave it up to them? You will need to let them know well in advance so they can sort out passports, leave from work etc. as otherwise it may be too late for them to attend.