Hi Stephanie

You can’t teach in a U.K. school without qualified teacher status, and I would not advise you try to do a PhD, PGCE and a job at the same time. To be fully qualified you need a one year PGCE or in school training and a year as a newly qualified teacher (NQT). You are not fully qualified until the end of your first year of teaching, two years if part time. In the U.K. there is a separate teaching qualification for HE that may be better if you want to teach at HE level.

I would suggest you get your PHD first then if you still want to teach look st doing a PGCE.