OK, so there aren’t jobs in your old Dept. Are there any vacancies in your new department, different teams, divisions etc? If so, your first step is to ask HR if you could have an internal transfer to one of these roles and to downgrade or even move on level terms. Please keep your line manager informed.
If you are going to have to move departments then I would take two approaches:
- Contact the department, the recruiting manager or HR contact, and explain your situation and ask if they would consider a transfer. Be clear you are happy to apply for the vacancy and ask questions to make sure the role is as expected.
- Apply for jobs, both in you old grade and your new grade.
In all three situations, talk (do not email) to your line manager and HR, explain that whilst you will do your best this role is not for you. Make it clear you are thinking about the business and don’t want them to pay for training when you know this is not the right role for you. Apologise and explain you would like to transfer either internally ( same dept):or externally (other depts) to x type of role. State you are applying for jobs and if they know of any suitable vacancies would they consider/help you.
They will try to talk you out of it, human nature, but if you are clear this is a square peg in a round hole situation they should be supportive. They may not be happy with the situation, it’s creating more work for them to fill your role, but most will understand and try and help you.
The other avenue is to ask you TU rep to assist you.
In my experience speaking up sooner rather than later is better. Most mangers are pragmatic and will try to help. The Civil Service as an institution has encountered this situation loads of times.
I am going to challenge you, why is your first instinct to downgrade rather than moving to another role at your new grade. Are you looking to go back to a safe space, do you have imposter syndrome? A level transfer in your new grade is an equally viable option.
Good luck