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The T20 Blast: England's Premier Domestic T20 Competition

The T20 Blast is England's premier domestic T20 cricket competition, featuring all 18 counties competing in regional groups followed by knockout finals at Edgbaston. It is the most-attended domestic cricket competition in the world.

Written by GeoCric EditorialUpdated Jul 3, 2026
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The T20 Blast (currently branded the Vitality T20 Blast) is England's premier domestic T20 cricket competition, featuring all 18 counties playing in regional North and South groups during June and July. The T20 Blast began in 2003 as the Twenty20 Cup — England's first professional T20 competition and the world's first domestic T20 competition at professional level. Since then it has grown into the most-attended domestic cricket competition in the world by aggregate crowd figures, regularly attracting over 700,000 spectators across a full season.

Format: Groups to Finals Day

Each county plays 14 group-stage matches (7 home, 7 away) in two regional groups — North and South. The top four from each group qualify for quarter-finals, played at county grounds in late August. The two semi-finals and the final are held on a single 'Finals Day' at Edgbaston, Birmingham — the largest county ground in England. Finals Day typically attracts a capacity crowd of approximately 22,000 and is broadcast live. The format compresses the knockout rounds into a single event that generates significant commercial revenue and spectator interest.

T20 Blast's Role in English Cricket

The T20 Blast is the primary commercial engine of county cricket. Counties earn the majority of their matchday revenue in the Blast season — ticket sales, hospitality, sponsorship and broadcast fees from the compressed summer T20 programme generate revenues that cross-subsidise the County Championship. The Blast has also become a showcase for global T20 talent, with many overseas players contracted for Blast campaigns before their home franchise seasons. The introduction of the Hundred in 2021 created tension over the Blast's scheduling window, with ECB carving out a separate slot for The Hundred in late July and August.

The inaugural T20 match in professional cricket was Surrey vs Kent at The Oval on 13 June 2003. It attracted 15,000 spectators — an extraordinary crowd for a midweek county match. ECB had expected T20 to be a modest attendance boost; the immediate popularity forced a rapid expansion of the competition and changed county cricket's commercial model permanently.

Frequently asked questions

How many teams play in the T20 Blast?

All 18 first-class counties play in the T20 Blast, divided into North and South groups of 9 teams each. The top 4 from each group advance to quarter-finals, then semi-finals and a final on Finals Day at Edgbaston.

When does the T20 Blast take place?

The T20 Blast group stage runs during June and July. The quarter-finals are typically held in late August, and Finals Day at Edgbaston takes place in late August or early September. The exact dates shift year to year based on international fixtures and The Hundred schedule.

Which county has won the T20 Blast most often?

Leicestershire and Hampshire have both won the competition multiple times. Other multiple winners include Northamptonshire, Hampshire, Somerset and Surrey. The competition has been relatively widely shared — no county has achieved sustained long-run dominance in the way Yorkshire dominated the County Championship.