OK, Cork to Leicester is 278 nm as the crow flies, probably 300 nm by a sensible routing. So it's two hours by Mooney, and a 650 to 700 lb payload is feasible. If you really intend to carry 4 people over that distance a couple of times a month, there may be more comfortable choices, but they will cost you. That said, over that sort of distance (say 300 to 500 nm, particularly where water crossings are involved) it's a wonderful way to travel.