Crisps that are no longer with us

Anyone remember Walkers Snaps, which Quavers copied. Spicy Tomato flavour were best, also cheese ones.......
I think they swapped brands as they were both owned by the same parent companies from the 80s. I.e. Quavers moved to Walkers from Smiths and were heavily pushed whereas Snaps were then produced by Smiths without any real push or fanfare. Only ever see Spicy Tomato these days and, whilst not quite as tinglingly spicy or melt-on-the-tongue as Walkers' originals, I confess still a frequent guilty pleasure of mine.