If I was looking to purchase new (and I can't remember the last time I did) it would be my first question. And then I suppose if the list price less eg £4k is the new baseline trying to get something more out of the salesman could be classed as sport.
All nonsense anyway, leasing or 3rd party PCPs has to be preferred for most people. Let some big buyer negotiate the discounts for you. Afterall, they want your business. The distinct impression I get from most dealers is they couldn't care less either way.
"If it appreciates, buy it. If it depreciates, lease it." Widely attributed to J Paul Getty but I think I'm going a bit off the original topic.