Platform 5 Heuston
 

Where are tickets currently being checked for Platform 5 Heuston (the usual platform for Cork trains)?

Previously I've been given out to for using the main ticket barrier at platforms 1-4, but the gate half way up was closed yesterday.

You are supposed to go in through the turnstiles for platforms 1-4, then keep your right hand on the wall/barrier. You'll end up going down a narrowish walkway with a metal fence on your left and half-height glass barriers on your right, continue down here and about halfway to platform 6-8 there is an entrance gate to platform 5 on your left.