Instead of Mansion floor polish I suggest you telephone Fiddes of Penarth Road Cardiff. They manufacture very high quality polishes. They will be able to supply via the post.
I use their products in restoration work.
Regards
I am sorry to bring bad news but I have just spoken to Reckitt Benckisser UK. They are no longer manafacturing Mansion polish. They are aware it was popular, but supermarkets did not have large sales.