Some I know of are too, makes you wonder how they manage/afford to run all these different companies, though perhaps it's something to do with tax situation...
If they are so closely associated, it is surprising that they have very different prices for the same thing. I have just priced a toy
( exact same) at £6.99, £7.49, and £9.99. And no, p&p is not included.
I remembered this thread last night while I was trying to arrange a 'return' to House of Bath ....... and surprisingly in the small print I noticed J.D. Williams details