I was moved from my substantive post on the 6/12/19 - I was given a six month agreement that I would be working at this higher level (2 grades higher) but that the arrangement was temporary and if I was off work for more than 2 weeks this would end. This arrangement has now been renewed in three month blocks until 31/12/21 (ie 2 years).
In December 2020 I resigned - I was asked to stay and agreed to stay if the role was made permanent and I was placed top of scale (I have been bottom of scale throughout). This was agreed and I have this in writing from my line manager - however this has not happened.
I am now being told I may have to interview for the post - it is unclear if this will be competitive or not.
Given that I will have been doing this job for two years in December and that I have in writing that the role will be made permanent my question is do I have to interview, and can I ask for back pay to December 2020? Any thoughts?