We can only recommend using the products in the condition they are sold.
Any alteration to the formula by the consumer can thereafter not be guaranteed.

Hi Dazzle,
We can only recommend using the products in the condition they are sold in. If you make any alteration to the formula, we cannot guarantee what the results will be like. Our recommendation would be to purchase a 100ml sample size pot of the British Paints Flat Ceiling Paint which may be enough paint to meet your touch-up needs.
Happy painting!

Try stirring the whole tin, as most might be settled in the bottom...if that doesn't work, take the BATCH no, its along the bottom rim of the tin NOT underneath...you have to really look for it, its NOT the bar code...that would be proof that you bought it from that shop, make sure you call them first, see if they will give you a replacement or refund, or they may say to call their office ( British Paints ) ..on.. 13 25 25 ....these are their hrs... Mon-Fri from 7:30am to 7pm (EST); Sat 8:30am to 3pm, and 10am to 4pm on Sundays

I bought a 4 litre tin and have the same issue - the paint is as thick as cottage cheese. Impossible to stir/mix and difficult to apply - tried small roller and long bristled brush. Had to change to a short bristled brush to achieve any level of success. How in God's name could you apply this paint with a sprayer, as it says on the can? You would have to remix with a large amount of water.