Some replies

Ronseal tell me that Colron Liquid Beeswax in antique pine contains no palm oil or palm oil derivatives.

Jeyes tell me that they don't use palm oil in any of their products and specifically confirm that Parazone Citrus thick bleach doesn't contain any. Unilever won't tell me if Domestos contains palm oil or not. I therefore view it as suspect and am switching to Parazone from now on.

Mykal Industries tell me that no palm oil is used in the manufacture of their Sticky Stuff Remover which is useful for getting labels off bottles when I'm recycling them into glass beads so that's a relief. They go on to say that they use citrus oil as the key ingredient which provides the excellent anti-adhesive effect of their product. Furthermore, no palm oil is used in any of their retail products.

I have received a policy statement from Reckett Benckiser but they haven't responded individually about the products I asked about. They link to a website which they say has ingredients for Dettol products so I'll do more research and possibly write to them again before posting information about their products.