Hi Ericsbrother, thanks very much for your reply. I didn't go into all the details in the above post, but we have been through organisational change. My official role was reviewed in 2013, I applied for redundancy but was asked to withdraw the application and offered the Secondment, which I was told was the best they could offer as the open post in the other company was a lower grade. The team I was seconded to went through organisational change whilst I was off and they did not include my 'unofficial' role in this and slotted a different (full time) person, the role profile is exactly my 'unofficial' duties for the last 10 years. I was recently surprised to discover the actual grade of the role was equivalent to mine. I have heard that maybe I had 'an out-dated job description' and therefore treated incorrectly during the organisational change in the first place. Do you think that makes any difference?

I have been working for a company for over 22 years, for the last 10 years I have been taking on extra responsibilty which was completely different to my contracted role. These responsibilities were initially equal to 50-50 of my time but over the 10 years grew until all of my time was spent on the other role. 2 years ago, we were informed a merger with another company was taking place and various redundancies occurred. I was asked to continue the other role and offered a Secondment for 2 years as there was no-one else with the skills, however in the other company there was an unfilled, official post but a lower grade to myself. 8 months into the Secondment, I started maternity leave. With 8 months left on the Secondment I returned on a part time basis, the other post has been filled internally without advertisement (now the same grade) and my Secondment effectively terminated and I am now expected to return to my original role that I have not been doing at all for the last 3 years. My question – is there any part of employment law that protects my role based on the responsibilities for the last 10 years rather than job title? I do not want to return to my old role and would prefer redundancy. Any advice would be appreciated. Thank you.