Are there an Developers/Buyers in South England/London looking for Off Market Property with add-on potential??

I would like to speak to direct Investors (HNWIs) / Developers or Family Offices who are looking at Off Market opportunities to acquire property such as: Mixed use/Change of use, add-on value, etc or land. This could be Resi, Hotels, Offices.
My main focus is in the South of England and London.
I have inquires for such assets but also have stock to offer.