Hi Karan

Some of the packages on offer for OSH professionals are derisory, BUT.....

The going rate depends on multiple factors including e.g. geography, along with experience, qualifications etc etc.

You don't even specify what "NEBOSH". 

If you think that just getting a NEBOSH General Certificate should get you a minimum of £45k, you are likely to be disappointed. 

Off the top of my head, I think that the median pay package in the UK for any type of job is currently at about £32k. Why would someone with a relatively low level OSH qualification have much higher expectations?

General certificate is very much a bottom rung qualification with salaries up to £25K for advisors.

Here's one where the bottom of the range is 45k and perhaps in terms of mainstream H&S quals a NEBOSH General might cut it.

Health and Safety Manager by Bryan & Armstrong in Oxford, Oxfordshire Ref: 221914097 (cv-library.co.uk)

BUT.....a few other things on the Person Specification wish list. 

I don't suppose my single visit to a project doing tunnelling with ground freezing would probably tick the "cryogenics" box.