It all depends on size. Big bands and singers no problem. The shitty size band that you could go touring with your shitty van through the eurotunnel, is not possible anymore capping possible new good music and maybe the need to give up when you might be actually good
It's a bit more than just very small bands. Mid size Irish acts are making very little touring the UK at the moment. Fees are down and admin and costs are up.
Requests for grants from Culture Ireland are helping most bands do it.