Billy Boyce was named after Moshoood Abiola Akanbi's father Billy. The fashion house is described as Mayfair style fused with Camden street culture on its official website.
Tributes have been paid to Middlesex University law graduate Akanbi on social networking websites.
Aries Lachey left a tribute on the Billy Boyce official Facebook page:"R.I.P Shaun you were always very sweet to me. May god bless your soul. Such a shame you were taken so early."
Bow tie company Sulphurgenic tweeted:
So sad to hear about the passing of Billy Boyce Founder, Shaun Akanbi. R.I.P from everyone at Sulphurgenic xx
More top news
The London property market is expected to be the hardest hit as buyers sit it out to see how the economy will be affected.
The former London mayor paid tribute to David Cameron just hours after the Prime Minister announced his resignation.
The pound crashed to its lowest level in 30 years as Britain voted to leave the EU.