Free Traffic Legal Advice

I have an old diesel which has been approved for scrappage. 2010, Ford Mondeo Estate.
I would say the car is worth £1500 as a runner - there's absolutely nothing wrong with it.  Apart from the emissions!  But here we are.

Let's say it's worth £500 scrap, for illustration.  The grant is £2,000.

What's the process? 

Will the dealers give me zero,  and TFL give me  grant for £2,000?
Will the dealers give me £500, and TFL give me  grant for £1,500, to make it up to £2000?
Will the dealers give me £500, and TFL still give me whole grant for £2,000?    So I'll end up with £2,500?

I've seen some scapper's adverts, offering cash on top of the grant. About £250.

Clearly that would be a bonus, but I don't know if that's legit or not.   

Want to know where I stand, and how it works, before talking to scrappers.

Have you read this (scroll down to 'Application stages').
https://tfl.gov.uk/modes/driving/ultra-low-emission-zone/scrappage-schemes/car-and-motorcycle

Just make sure you follow the TFL rules or you will struggle to get the 2K out of them

Whatever you get from an approved scrappy is bunce

A scrappy playing fast and loose with the rules… who’d have thought!