I don't know if FE-trained teachers are able to teach in secondary or primary schools. If you are, the only problem is there are more trained primary teachers than there are jobs and in interviews you would be up against people who have experience and training of teaching at primary level. You would have to prove that you were the best person for the job, even though you have been teaching FE for the last 7 years. You should try and get some experience in a primary school and think about what else you could offer - some schools like people with a Maths/Science specialism, some like musicians, some like those who are willing to run an afterschool club. Also, have a look at the primary curriculum; there's a lot there to teach and it can be tricky planning and assessing at primary level if you're not used to it. As for the pay, I don't know how it works as you've been teaching previously. You would have to negotiate your starting pay at interview. There's no set "NQT rates of pay", as different new teachers bring different experience, so some start on M1, some start higher.