Business fare

Please could someone advise me the difference/advantage if any between a business domestic ticket or standard donestic. Business appears to be twice the price. Leeds to Heathrow.
Thank you.

I would also like a heads up.
Booked Cub Europe fare from MAN - AMS via LHR. Last leg showing as Club Europe but first "domestic"? Been able to book a seat from MAN for free but BA want £28 to reserve one from London to Amsterdam? Confused by the logic.

ISTBC but I think the only sound advantages of the "business" domestic are some flexibility about tickets, lounge access (where a lounge is available) and possibly better TP & miles?. BA page is here. BA "domestic" routes are single class configuration.

Better service onboard, on the three sets of seat, the middle one is left empty/blocked. So you get a better meal, some champagne if you want some, lounge access, priority boarding wherever, and club desk check ins.

Better service onboard, on the three sets of seat, the middle one is left empty/blocked. So you get a better meal, some champagne if you want some, lounge access, priority boarding wherever, and club desk check ins.

I thought that BA Business Domestic got some "on ground" perks (lounge access, priority boarding) but once in the air was exactly the same as "standard" domestic - so same level of service, same food and drink offerings?

Business UK (or whatever they are calling it now) is a fare type, not a seat type. So will be lounge access (if the staff are clued up enough) etc, but the same seat and service onboard.