Birmingham City In 1993, Sullivan bought into
Birmingham City, with
David Gold and
Ralph Gold. The landmark deal saw the new owners secure an 80% stake of the Midlands outfit. In 2007, Sullivan expressed his first desire to sell his share in Birmingham City and openly admitted three reasons for a possible departure. "One, the geographical distance. I've said for years the journey to Birmingham is killing me. Two, I think deep down the public have had enough of us. They think we should have mortgaged our houses to buy more players to compete with Chelsea and Arsenal. The honeymoon is long over and we're at the divorce stage now, unfortunately. And I also feel we've had no support from Birmingham Council." After 16 years at the club, Birmingham managing director
Karren Brady and chairman David Sullivan agreed to step down from their posts on completion of
Carson Yeung's takeover in Autumn 2009. The Birmingham manager at the time,
Alex McLeish, praised the Sullivan-Gold duo in the media for providing the club with financial stability, stating he respected them a lot for what they had achieved.
West Ham United On Sullivan's departure from Birmingham, he expressed his intentions to remain in football. Less than one year later in January 2010, he and David Gold acquired a 50% share in
West Ham United giving them operational and commercial control and valuing the Premier League club at £105 million. Brady, who had also played a significant role in turning around City's fortunes, joined the Hammers as vice-chairman. On the day the takeover was confirmed, an emotional Sullivan said: "It's going to take time to sink in. We've been wanting to sit here for 20 years and together we owned 27 per cent of the club 22 years ago and it's taken us 22 years to get to where want to be. Both me and David are supporters, I went to university here and I lived in Hornchurch. David lived 50 yards from the ground for 20 years of his life and played for West Ham's youth team. We just want to be here where we've always wanted to be. There is no other club we would want to be at so for us we have come home and that's what it's all about." Within five months the Sullivan and Gold duo pledged a further commitment to the club and on 25 May 2010 they increased their stake to 60% (Sullivan with 30%). Vice-chairman
Karren Brady later explained the move gave the football club "the much-needed stability." In September 2012, Sullivan revealed that together with Gold they were personally funding the club's transfer business. As part of his long-term aspirations for the club, Sullivan backed West Ham's bid to move into the
Olympic Stadium in Stratford. On 22 March 2013, West Ham secured a 99-year lease deal, with the stadium planned to be used as their home ground from the 2016–2017 season. In July 2013, Sullivan became the largest single shareholder of West Ham United acquiring a further 25% of shares in the club. In March 2018, there were protests against Sullivan at the London Stadium during a 3–0 home defeat to
Burnley. There were four pitch invasions and Sullivan was escorted from his seat before the end of the match. Sullivan was also hit by a coin thrown by one of the
supporters. On 26 March 2018, an
HMRC tax tribunal ruled that Sullivan had used West Ham United to avoid paying £700,000 tax for his own family business, Conegate Ltd. Sullivan used Conegate to buy £2 million of shares in the holding company that owns West Ham. The same day the shares were converted to "deferred shares", deemed practically worthless and sold back for £1 back to the holding company. Conegate thereby used the £2 million loss to reduce its tax bill.
Hornchurch Hornchurch's season in the
Isthmian League Premier Division was suspended in November 2020 due to the
COVID-19 pandemic and they were unable to play any league football. During this time they were financially supported by Sullivan who once lived in Hornchurch. ==Personal life==