sainsburys,ocado firts time buyers discounts?

[gabby1204]

do these stores, ocado,waitrose,sainsburys still have the discouts for the firts time buyers?
i knew that when you register with them you get a discount is that true?do i need the codes from somewere?
thanx

if you google there are lots of first time buyer codes, trawl through them because some are better deal than others, all have minimum spend