How easy is it to retrofit automatic fog lights to a new car?

I'm buying a Seat Ateca S because I'm not prepared to wait the 20 weeks delivery time or pay the extra £4000 for the SE model. If I wanted to retrofit automatic fog lights, instead of having to turn them...

Where can I buy fog light brackets for my 307?

I have looked everywhere for fog light brackets for my Peugeot 307 (2006 model) but can't find them anywhere. Can you provide any information as to where I can find some?

How do I replace a fog light on a 2007 Renault Megane?

I need to replace a fog light on a 2007 Renault Megane saloon but I cannot see any way to do this. The handbook says refer to dealer.

Will my car fail the MoT due to broken front fog light?

The nearside front fog light on my 2013 Vauxhall Corsa doesn't work, I have changed the bulb but still not working, will my car fail its MoT because of this?