Theo Barclay > 4 New Square Chambers > London, England > Lawyer Profile

4 New Square Chambers
4 New Square

Living Wage


Barrister, 4 New Square.


Theo has extensive experience across the full spectrum of commercial disputes. He acts on substantial domestic and international claims, which recently have included a £1.5bn tax fraud claim, a seminal charity law case in the Supreme Court, a £50m+ broadcasting licence dispute, and multiple claims against a discount supermarket for trade mark infringement. In sports law, Theo has appeared for and against several Premier League football clubs including Liverpool FC and Tottenham Hotspur in some of the leading football cases of recent years. He also specialises in costs law, having been instructed as sole costs counsel in a number of major commercial cases and acted as junior counsel to several of the leading costs silks.


COMBAR, PNBA, British Association of Sport and the Law


Lord Haldane, Lord Denning and Lord Wolfson scholar, Lincoln’s Inn.
Brasenose College, Oxford.


Theo is the author of Fighters and Quitters, a book on political scandals, and contributed a chapter on George Canning to a book on Britain’s Prime Ministers.

Lawyer Rankings

London Bar > Sport

(Leading Juniors)Ranked: Tier 4

Theo Barclay  – 4 New Square ‘Having Theo on your side is like having a Mercedes in the garage: quick; reliable; nothing ever goes wrong.’

London Bar > Costs

(Leading Juniors)Ranked: Tier 4

Theo Barclay4 New SquareIncredibly bright, with excellent judgment. Very hard-working and responsive. A real pleasure to work with.