You need a Level 8 degree even if it's a Pass BA/BSc Hons. You have a Level 7, you need to up-grade this the OU could help you to do this.
If you are aiming for Secondary, you have the whole issue of your degree relating to a curriculum subject, see Teaching Council website - Getting onto a PGDE is very tough, currently points for subbing help your application, but not sure if subbing will be allowed soon once Teaching Council gets it's teeth into the whole 'unqualifieds' in the classroom issue.
Primary is more flexible re subject, but you have the whole Irish issue and the need to show demonsrable interest in kids and teaching as a career e.g hobbies, voluntary work etc.