In reply to Tom Valentine:
Two memorable E1 5a's for me are The Boulder on Cloggy and Spider Wall on Gogarth.
The Boulder was my first E1 lead, I reasoned (correctly) that it was basically an HVS 5a with not much gear as it was originally graded HVS in the days when people expected big runouts. I'd recently been finding HVS's very easy so thought it should be fine, the climbing was fine but with only 2 runners in c.150' it was still rather less protected than I had expected.
Spider Wall, also originally HVS, is quite different in that it has plenty of gear, unusual for E1 5a but it has very sustained 5a climbing and in a wonderfully isolated and potentially very serious position.
Being out on the seaward face of the Wen Zawn promontory nobody can see you, not even your second, nobody knows you're there and there's nothing but sea until Ireland. As you move further and further out onto the face with some tricky routefinding (you could easily end up on harder ground as it's the easiest route on this part of the face) the sense of isolation and commitment just builds and builds.
Just give pitch 2 a miss, its nothing special and the rock very poor, finish up up Britomartis, easy though with no meaningful gear for most of it.