And in fact the probationary year ceased to be compulsory for a period, and was then reintroduced as the "induction period" (sounds somewhat less criminal...)
"After having being awarded QTS teachers must normally still pass an induction period (previously called 'probation') – normally their first year of teaching. Those who fail the induction still retain their QTS, but cannot teach in state-run schools. The induction period normally lasts a year (three school terms). Such teachers are often known as a Newly Qualified Teacher or NQT."
http://en.wikipedia.org/wiki/Qualified_Teacher_Status
I found this article helped to clarify things, although it took a while to open:
http://www.prospects.ac.uk/cms/ShowPage/Home_page/Feature_Ar...