In reply to Paul Evans:
And to all who replied, and anyone else who's interested. When we arrived (on Monday 8th May) the helpful lady at the cafe in the car park told us that a party the previous day had removed the tyrolean ropes, as they had been there for around 18 months and were now unsafe. They had however left anchors in place. We arrived, Liam swam across with our rope (old but "in good nick" red 10mm sport rope) and fixed our rope. We added backups (which we removed when we left) to landward and seaward anchors. We've left our rope in place, so this was fitted at 8th May this year. Future parties make your own assessments and cross at your own risk! All members of party crossed, made the ascent, abbed off and crossed back. Being a sport rope there is some stretch and it needs to be pretty tight or you'll dip into the sea (won't you Jim?). Wonderful conditions, blue skies, calm winds and light seas. Great climb. Top tip. Send your gear across separately, don't clip it to your harness. Particularly don't clip a brand new guidebook to your harness...