Do I need planning permission for driveway bollards?

I have a driveway with a partial wall and we have a garage, but the cars won't fit. I'm thinking about putting bollards up so I can secure my two vehicles at night.

Firstly, do I need permission for them?

What type of bollards are there? Can you get automatic and manual ones? I'm a complete novice, so not sure where to start.

And lastly, could this additional security feature help lower my car insurance costs, and add value to my home?

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