In reply to EdF_Bris:
Dont take this the wrong way but if you are not with someone experienced who can go over what you're doing, reign in your aspirations.
If you've not placed trad gear or rigged anchors before and you go and try wing it, there is a real chance of someone getting badly hurt or worse. There are so many subtleties to gear and anchors and even the experienced get caught out from time to time. It's not something you can watch a youtube video about and be ready to go.
If you're genuinely interested in learning to place gear or climb trad routes:
Get a copy of Climbing Anchors by John long and study it, then either team up with a mate who knows what they're doing, join a climbing club, or hire an instructor (there will be plenty down Cornwall way who would be happy to take you and a mate on a proper exciting day introducing you to trad and seacliffs in a safe manner).
If you just go buy some gear and try bodge it then you'll probably get you and/or your mate dead.