Paint - white (or off-white) emulsion (Lakenham NR1)

I need to prime some interior walls and would be grateful for any left over white or off-white emulsion I can use for this purpose please. I won't need a huge amount, the brand isn't important and I don't mind if it is the end of more than one tin. I can collect within about 5 miles of the city centre (a bit further for a full can!) Thanks for reading.