I tried Sally's and no luck. Does Paks sell them? I looked on their website and they have "Annie Snap On Magnetic rollers" but the picture of it were really small ones. Do you know if they sell large/jumbo ones?
Pak has all the sizes Finsbury Park and Harlesden, so does Global Hair on Kilburn High road. What part of London are you in there are a lot of BSS that carry them
I remember there were a few BSS at Upton Park, not far from the station I don't remember the names but even the market had a huge one, I'm sure they'd carry it. Alternatively like PP said you can order on ebay.
Paks cosmetics in finsbury park sells all sizes and a few different styles. You can definitely find them there. They also stock the double prong clips if you're interested in those too
Yep, Paks sells them. They have a whole section for rollers, next to the oils..
The purple rollers don't come with the snap on cover though (neither do the grey ones). I ended up buying the grey ones there, and the purple snap-on ones online.