No special access issues
Park at the Cromlech boulders and walk towards Pen y Pass until a style on the right, just after the bridge. Walk under the Pont y Cromlech slabs to another style on the uphill side. Follow the (increasingly obvious) path over the hillside, keeping an eye out on your right for the obvious face of Lizard King.
For Mr You're On Fire Mr, cross the wall to your right (carefully) on an obvious rock in the middle of the wall and head up the hillside. Emyr's Arete can be accessed from this side too.
For Lizard King, continue ahead over the wall and turn right, romping up the hill before coming back on yourself to arrive at the bloc. Emyr's Arete is a (careful) hop over the wall