I still don't think that the Smith brothers are worth anything like as much as people think. The last accounts available (from 1982) show the net worth of the company at a shade under ?20million. Even if the value of the company has increased tenfold (rather unlikely, even with the addition of subsidiaries) that's still 'only' ?200 million now. More importantly freehold fixed asset costs were shown at ?12.5million, so again, even if we make a wild assumption that they've increased in value ten times, that's ?125 million.
The big BUT is that the main value within the company is the freehold assets - the pubs - and the overall capital value of pubs in the UK has less than doubled since 1982. OK, a good few - particularly the London pubs - are in prime locations and would fetch a tidy sum but the majority are certainly not located in prime areas. I'd be surprised if the net worth of the brewery company is more than about ?50 million. Then there's the other trading companies like Sarah Brownridge, which must be worth a few million, the farms, more millions, and any other property, a few more millions. How about a finger in the wind and say they're worth around ?100 million?