The eight teams at the tournament were split into two groups of four teams, with each team playing the others in their group in a single round-robin format. The top two teams from each group then advance to the semi-finals to play in a single-elimination tournament.
The 1979 tournament saw the first qualifiers in a World Cup. The 1979 ICC Trophy was held during late May and early June at various grounds in the English Midlands, with the two finalists qualifying for the World Cup where they joined the six Test nations who qualified automatically. Sri Lanka and Canada qualified after defeating Denmark and Bermuda respectively in the semi-finals.
| Team | Method of qualification | Finals appearances | Last appearance | Previous best performance | Group |
| England | Hosts | 2nd | 1975 | Semi-finals (1975) | A |
| India | Full member | 2nd | 1975 | Group stage (1975) | B |
| Australia | 2nd | 1975 | Runners-up (1975) | A | |
| Pakistan | 2nd | 1975 | Group stage (1975) | A | |
| West Indies | 2nd | 1975 | Champions (1975) | B | |
| New Zealand | 2nd | 1975 | Semi-finals (1975) | B | |
| Sri Lanka | 1979 ICC Trophy winner | 2nd | 1975 | Group stage (1975) | B |
| Canada | 1979 ICC Trophy runner-up | 1st | — | Debut | A |
The opening round of matches took place on 9 June with four matches being played. England took on Australia at Lord's and after the home team elected to field first, restricted the Australians to 97 for one with fine fielding and bowling. After Andrew Hilditch dragged his second ball after lunch into the stumps, the Australians would be restricted for 159 which included four run-outs. The run-chase saw Mike Brearley and Graham Gooch control the innings and led England to a six wicket victory.
In a very close semi-final match, England prevailed. New Zealand won the toss and fielded. England began badly, falling to 38/2, before Mike Brearley (53 from 115 balls, 3 fours) and Graham Gooch (71 from 84 balls, 1 four, 3 sixes) resurrected the innings. Derek Randall (42 from 50 balls, 1 four, 1 six) played well in the second half of the innings, as England recovered from 98/4 to post 221 (8 wickets, 60 overs). In the response, John Wright (69 from 137 balls) attacked well in the beginning. However, the loss of wickets bogged New Zealand down, and despite several late flourishes in the batting order, New Zealand started to drop behind. When New Zealand could not achieve the remaining 14 runs from the last over of the match, England went into the final. Gordon Greenidge (73 from 107 balls, 5 fours, 1 six) and Desmond Haynes (65 from 115 balls, 4 fours) set a first wicket partnership of 132 runs in a match dominated by batting. Vivian Richards and Clive Lloyd also contributed solidly, as West Indies ran up 293 (6 wickets, 60 overs) against Pakistan. Majid Khan (81 from 124 balls, 7 fours) and Zaheer Abbas (93 from 122 balls) shared a second-wicket partnership of 166 runs in 36 overs in the response. However, none of the other Pakistani batsmen flourished, with Javed Miandad being bowled for a duck first ball, and Pakistan lost 9/74, beginning with the dismissal of Abbas. Pakistan was bowled out for 250 in 56.2 overs in the high-scoring semi-final, sending the West Indies to the final.
England won the toss and chose to field first. The West Indies got off to a bad start, falling to 99/4 with the loss of Greenidge, Haynes, Kallicharan, and captain Clive Lloyd. However, Vivian Richards (138 from 157 balls, 11 fours, 3 sixes) and Collis King (86 from 66 balls, 10 fours, 3 sixes) consolidated the innings. King especially savaged the English bowling, with a strike rate of 130.3. The West Indies were 238/5 when the 139 run partnership ended with King’s dismissal. Vivian Richards and the tail then took the West Indies to a very imposing total of 286 (9 wickets, 60 overs). The English batsmen got off to a good start. But the openers, Mike Brearley (64 from 130 balls, 7 fours) and Geoff Boycott (57 from 105 balls, 3 fours) scored very slowly with a methodical opening partnership of 129 runs in 38 overs, playing as if the match were a five-day Test. By the time both batsmen were out, the required run rate had risen too high, putting pressure on the later batsmen. Graham Gooch played some hefty strokes in scoring his 32, taking England to 183/2. However, the loss of Derek Randall triggered a batting collapse in which England lost their last eight wickets for 11 runs to finish all out for 194 in 51 overs. Vivian Richards was declared Man of the Match.
Gordon Greenidge ended the tournament as the leading run scorer with 253 runs coming from his four games. Second was fellow West Indian player, Viv Richards who finished with 217 runs from four games which included the highest individual score of the tournament of 138 in the final. Graham Gooch from England rounded out the top three. Mike Hendrick from England was the leading wicket taker for the tournament with ten wickets from five matches with a three-way tie for second place with Brian McKechnie (New Zealand), Asif Iqbal (Pakistan) and Chris Old each taking nine wickets for the tournament.
The total attendance at the tournament was 132,000, including 25,000 at the final.
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