Many thanks for all the support and advice. I met with HR on Tuesday and they are happy for me to stay on. They are putting in supports such as a mentor and weekly meetings with my line manager to address any issues that I may have difficulty with. They have said that my workload was too much and are looking at ways to address this. They are encouraging me to remain at my current grade and are hopeful with supports that I will be able to manage. I'm going to see how it goes for the time being
Thanks again