Their largest shareholder I think is a tax exile Joe Lewis who is also the largest shareholder of Spurs.
I thought Vintage Inns was part of their portfolio also.
They have always maintained that they pulled out of the brewery business as a result of the Monopolies Commision rulings in the 1990s. I thought that they sold off Beefeater etc but I could well be wrong so wouldnt argue. They definitely have given up brewing.
Just googled it they still own...
I would think the 3 largest holders of pubs are
Enterprise mostly leasehold
Greene King some leasehold and some managed
Punch Taverns leasehold mainly.
Cant think of others that have more pubs only M& B mainly managed chains.