The B & M Site (867 to 879 (odd numbers) High Road, Tottenham, London), Land Registry Title Number : MX314424) was bought by Stanhope Tottenham Ltd (now Fairgate Tottenham Limited) for £14,550,000 in 2017 - the title deeds were only changed to the Fairgate Tottenham name on 20 February 2020 (ie 10 days ago !).
FAIRGATE TOTTENHAM LIMITED - Free company information from Companies House including registered office address, filing history, accounts, annual return, officers, charges, business activity
beta.companieshouse.gov.uk
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However the Ultimate holding company is Tottenham Holdings Ltd (formerly Stanhope Tottenham Holdings Ltd) which is 50% owned by Tottenham Developments Ltd (and 50% by 3rd parties I don't recognise)
Fairgate Tottenham Ltd and Tottenham Holdings Ltd both have their Registered Office at Lilywhite House with Directors being Levy and Collecott (FD).
However I cant trace Tottenham Developments Ltd at Companies House, so can't say for sure if this a Tottenham Hotspur Ltd subsidiary company or not. I will see if I can trace the company when Spurs publish its accounts at the end of March/start April