England EFL Cup

The original idea for a League Cup came from Stanley Rous, who saw the competition as a consolation for clubs who had already been knocked out of the FA Cup. However, it was not Rous who came to implement it, but Football League Secretary Alan Hardaker. Hardaker initially proposed the competition as a way for the clubs to make up for lost revenue due to a reduction in matches played, for when the league was to be reorganised. The reorganisation of the league was not immediately forthcoming; however, the cup competition was introduced regardless.

The trophy was paid for personally by Football League President Joe Richards, who was proud of the competition, and he had his own name engraved on it. Richards described the competition's formation as an "interim step" on the way to the league's re-organisation. Richards' priority was the reorganisation of the leagues, "perhaps by cutting down the number of clubs in each division, as has already been suggested, and even given more consideration to the system of four up and four down".

Hardaker felt that the Football League needed to adapt to the times, as the English game was losing prestige. He felt that the Football League should take the lead in revitalising football in the nation: "It must be obvious to all of you that the time has come to do something, and it is up to the Football League to give the lead. I hope the Press will not immediately assume that the League is going to fall out with the F.A. or anybody else... the time has come for our voice to be heard in every problem which affects the professional game."

The League Cup competition was established at a time when match-day attendances were dwindling. The league had lost a million spectators compared to the previous season. It was established at a time when tensions between the Football League and The Football Association were high. The biggest disagreement was about how revenue was shared between the clubs.

During the late 1950s, the majority of senior English clubs equipped their grounds with floodlights. This opened up the opportunity to exploit weekday evenings throughout the winter. The League Cup was introduced in the 1960–61 season specifically as a mid-week floodlit tournament to replace the Southern Professional Floodlit Cup.

The League Cup was criticised by the better-endowed clubs. The Times' correspondent at the time felt that the League Cup was a step in the wrong direction; the European Cup had been formed five years prior to the League Cup and the correspondent felt the League Cup's introduction was adding to existing problems. The Times published on 30 May 1960: "Where a drastic reduction is required in an attempt to raise quality, no doubt quantity and a further spread of mediocrity will be the dose. Where men like Count Bernabeu with his wider horizons, think in terms of a European League for the future in which a lead could surely now be given jointly by our leaders, the Football League propose next season to implement their useless Football League Cup to be played in midweek. It gets the players, the clubs and the public nowhere."

Aston Villa were the inaugural winners in 1960–61, defeating Rotherham United 3–2 in the final over two legs. Football in England was considered to be of a low quality, compared to what was being played on the continent, as relatively unfashionable clubs Burnley and Wolverhampton Wanderers were England's representatives in Europe that year, having lifted the major honours ahead of much bigger clubs like Arsenal and Manchester United. Richards referred to the appetite for European football as 'continental fever'. He was keen for the league to re-establish itself: 'We must be prepared to put the interests of the League and the game before individual clubs.' Sixteen clubs opposed the competition's creation, thirty-one approved it. The average attendance across the League Cup was 10,556, just higher than the average gate in the Third Division. The total attendance of the Football League competition had fallen by 4 million from the previous season. Richards is reputed to have told Hardaker that he foresaw 'the League Cup final being held at Wembley, but that it wouldn't be during his lifetime'. The first League Cup final to be held at Wembley was Third Division Queens Park Rangers's win over First Division West Bromwich Albion on 4 March 1967. Richards died in 1968.

The first League Cup was won in 1960–61 by Aston Villa who, at the time, held the overall record for major trophies won in England.^[] The next three finals, however, saw the trophy won by clubs who had never won a major trophy before. One of them, Norwich City, had yet to even play in the First Division, while their opponents Rochdale had played no higher than the Third Division.

The introduction of the League Cup gave the Football League more negotiating power with the FA and UEFA. Hardaker threatened UEFA with a boycott of the UEFA Cup, unless UEFA gave the League Cup winner European qualification. As a result of the negotiating tactics, UEFA provided the League Cup winner with a place in the European competitions, providing the team was in the first division. Tottenham Hotspur were the first team to qualify for Europe by virtue of winning the competition. Although Leeds United had won the competition before Tottenham, Leeds qualified for Europe based on league position. The winners of the 1966–67 and 1968–69 editions, Queen's Park Rangers and Swindon Town did not participate in Europe, as they were not in the First Division.

Prior to the agreement with UEFA, the competition was not considered worthy of the larger clubs' attention. However, once a position in Europe was on offer, as was a final at Wembley Stadium, the competition's standing was improved and in the 1968–69 season only Manchester United declined to participate. Everton chose not to compete in 1970–71 so that they could concentrate their efforts on the European Cup. Entry was made compulsory for all Football League teams the following year.

Liverpool have won the cup on the most occasions with ten victories, and both they and Manchester City have won four League Cups in successive years. Liverpool completed two trebles of trophy wins, in 1983–84 and 2000–01, winning the League Cup in both of these years.

English clubs lost their place in European competitions for an indefinite period in 1985 as a result of the Heysel disaster, where Liverpool fans had taken part in a riot at the European Cup final, resulting in the death of 39 spectators. That year's winners of the League Cup were Norwich City, who would otherwise have played in a European competition for the first time in the 1985–86 season. Oxford United, Arsenal, Luton Town and Nottingham Forest also missed out on the chance to compete in the UEFA Cup as League Cup holders over the next four years. Even when the ban was lifted in 1990, League Cup winners did not participate in European competitions for two more years, when Manchester United won the trophy and qualified for the UEFA Cup anyway, as they had finished second in the league. In the previous two seasons, Nottingham Forest and Sheffield Wednesday had both been prevented from competing in the UEFA Cup as League Cup winners, due to the gradual reintegration of English clubs in European competitions.

In 2016–17, the competition was renamed the EFL Cup as part of the Football League's rebranding to become the English Football League.

In the early 21st century, following restructuring of European football, particularly of its international club competitions, the UEFA Champions League, UEFA Europa League and the UEFA Conference League, there were considerations of removing the prize of European qualification from the League Cup's winners. England and France are the only UEFA members to offer a European berth to the winners of their second cup competitions until 2020, when Coupe de la Ligue was suspended indefinitely, meaning England is the only UEFA member to do so. This has allowed the League Cup to retain popularity, especially with fans of clubs for whom success in cup competitions offers their only realistic chance of qualifying for Europe.

Giant-killings are less well remembered in the League Cup than in the FA Cup due to the absence of non-league sides and the fact that big clubs often field more inexperienced sides in the early rounds.^[] However, there have been some notable upsets, the final of 1966–67 saw Division Three side Queens Park Rangers come from 2–0 down at half time to win 3–2 against top-flight West Bromwich Albion in the first League Cup Final to be hosted at Wembley Stadium. Two years later in 1968–69, Third Division side Swindon Town beat Arsenal 3–1 after extra time in the final to win the trophy. In 1974–75, Fourth Division side Chester beating defending league champions Leeds United 3–0 on their surprise run to the semi-finals.

Former League club and now defunct Scarborough defeated Chelsea 4–3 on aggregate in October 1989, while a Fourth Division club. In 1992–93, Scarborough then defeated Coventry City (then a top-tier side) 3–2 on aggregate, before ultimately going out of the competition, narrowly, 1–0, against Arsenal.

In 1995–96, Manchester United were beaten 3–0 at home by York City in the second round, first leg; United could only win 3–1 in the second leg and went out 4–3 on aggregate (York went on to repeat the achievement against Everton the following year). United went on to win the FA Premier League and FA Cup double and did not lose another home game that season, while York narrowly avoided relegation to Division Three (fourth tier).

Grimsby Town recorded a number of upsets over a nine-year stretch; whilst playing in the third tier in 1997–98 they defeated Premier League side Sheffield Wednesday 4–3 on aggregate over both legs before knocking out fellow Premier League side (and League Cup holders) Leicester City 3–1. In 2001–02 they beat current holders Liverpool at Anfield with a 2–1 win in extra time. Four years later they recorded another giant killing by defeating Tottenham Hotspur 1–0 at home, by this time Grimsby were playing in the fourth tier.

Manchester United have also been knocked out by Southend United and Coventry City in 2006–07 and 2007–08 respectively: in the match against Southend they fielded a strong side with 10 internationals, bucking a trend they had themselves started during the 1990s. In the 2014–15 season, Manchester United fielded five international players but lost 4–0 in the second round (in which they entered the tournament) against third-tier side MK Dons.

In 2010, Liverpool were humbled again by Northampton Town, one of the lowest placed teams in League Two. In the 2012–13 competition, League Two (fourth tier) side Bradford City eliminated three Premier League sides from the competition, becoming the lowest-ranked team to do so since Rochdale in 1961–62. However, their luck finally ran out in the final, where they were beaten by Swansea City. In their centenary year, Swansea became the first team from outside England to win the League Cup on 24 February 2013, when they beat Bradford City 5–0 to win their first major English trophy.

In the 2022–23 competition, Gillingham (then ranked 22nd in League Two) eliminated Brentford (then ranked 11th in the Premier League) in the third round on penalties; the teams were 79 places apart in the English football league system.