Andy Hall wrote:
Has anyone used this stuff or knows where to obtain it?

You can get it in B&Qs (big ones anyway), next to the FAB, cement dye,
and stuff. I've only used it once, for repairing some cracks in a
Victorian window lintel. Horrible sticky stuff that earns the
reputation that epoxy tile grout doesn't deserve in terms of difficulty
of application, or rather smoothing off once applied. If you have any
other option, I'd use it, although it sure seemed tough an hour or two
later, and no sign of any re-emergent cracks are visible - so it seems
effective. Unless this is going to have to have heavy loads, I'd go for
a self-levelling compound instead.