Not sure if this has been discussed before, but BA seems to have introduced longhaul baggage fees. You can now fly "economy basic" or "economy standard". The latter costs between £30 and £75 more and allows you to bring a bag and pick a seat 24 hours in advance.
Annoyingly, there seems to be no way to search for "economy standard" only and Kayak is not aware of this, so to find out the price you need to click on a basic price and wait for it to calculate.
Sounds like a ruse to market lower prices rather than a feature to reward the rare longhaul traveller who doesn't have a bag.
Unimpressed.