I applied for a new job within the same organisation I work in NHS but in a completely different department and building. I got the job and all the relevant checks have been going through, CRB, Occ health etc. I have decided i'd much rather stay in the job i am in at the moment but what can I do????? They have invested time and resources in getting my checks done and I'm not sure I will be able to just 'change my mind' and I feel bad about all the time wasting. I have not actually handed my notice in for my original post yet and was advised to wait until everything had gone through. What can I do???