I am currently claiming Contribution Based Job Seeker's Allowance but it runs out shortly after six months. After that will I still need to sign-on and will I still get credits for National Insurance contributions?
I can't claim Income Based JSA because I have too much money from my redundancy.

yes-they'll still credit your N.I. but you still need to sign on

As for benefits/ money, it depends on what you have as total savings and investments
If you have little or none you'll go onto other benefits, just ask them
Sadly if you have savings and investments you might get nothing?
Hopefully you'll get a job soon, and you won't have to worry about it all

I think you'll still have to sign on just to get the NI credits, my father used to have to sign on even tho he wasnt getting any benefits and i think that was the reason