Indemnity Insurance, any advice?

Hi there!

Maybe you have treated this topic 1000 times, but I could not find any helpful advice..
So, I have just changed job and today (I start tomorrow) I have been informed that I need an Indemnity Insurance (I didn't need in my previous job).
I already know about Dental protection and BADN, but I am still considering if it is worth to pay nearly £90 for the membership (Indemnity included)..
Do you know/suggest any other way to get the Insurance only?

Thanks in advance for your help.

Elena