I haven't checked the data sheet (but will do now, thanks for the reminder) but I have read it can be applied to concrete - no mention of tiles that I've seen (In a few Google searches).
Thanks for the heads up about Wickes - I think I was just looking to avoid spending £30 on a bit bottle of...
Going to be tiling onto a concrete floor within a fireplace. I've got a tin of Zinsser Peel Stop to hand and wondered whether anyone knew if it could be used to prime the concrete before tiling? Or should I just stick to SBR. Other suggestions welcome