He arranged for junior players from Tottenham Hotspur to play for the club including Taffy O'Callaghan, Willie Evans and Bill Whatley, all of whom eventually became internationals, between them gaining 17 Welsh caps.

The side included five internationals in Ted Bunker, George Wheeler, Dennis Kelleher, Ron Phipps and Lester Finch.

In the 1958–59 season, their young team coached by George Wheeler, reached the FA Amateur Cup final for the third time, but were beaten 3–2 by Crook Town.

In 1947, Barnet FC played Sing Tao Sports Club, winners of the Hong Kong Football League at Underhill.

[3] Barnet reached the third round proper of the FA Cup for the first time on 9 January 1965, meeting the previous season's runner-up Preston North End at Underhill.

He persuaded Les Eason, then 20 years of age, to join from Finchley and then acquired amateur international Barry King from Hitchin, who became the first player to sign professional forms for the club.

In 1969–70 the FA Trophy was introduced and Barnet reached the semi-final before losing to Macclesfield Town 0–1 at Stoke City's Victoria Ground.

It was during this period that many famous names played for the club including Jimmy Greaves, Marvin Hinton, Bob McNab, Terry Mancini and John Fairbrother.

They also managed to beat Wealdstone – fierce rivals at the time and about to win the non-league double – by seven goals to nil, thanks to a haul from Nicky Evans and a hat trick by Steve Mahoney.

A win in the last game of the season against Fisher Athletic finally saw Barnet promoted to the Fourth Division of the Football League.

The 1992–93 season saw controversy at Underhill as Barnet chairman Stan Flashman regarding club accounts and players' wages, resulting in some nationwide back page headlines.

Goalkeeper Gary Phillips took over as manager during a difficult summer in which Barnet marginally survived a vote of expulsion by a Football League EGM, and lost the vast majority of their promotion winning side in a tribunal which nullified the players' contracts.

Despite a 7–0 victory in his first match in charge vs Blackpool, the club ultimately won only five more games for the remainder of the season and finished in bottom place after failing to beat second-bottom Torquay United, returning to the Conference after exactly a decade.

He was replaced by Peter Shreeves, who only months before had been in charge of Division One side Sheffield Wednesday, and quickly turned Barnet's form around.

2007–08 saw another mid-table finish for Barnet; 12th with 60 points, and a second run to the Fourth round of the FA Cup, where they lost 1–0 to Bristol Rovers, with Jason Puncheon missing a penalty for the Bees.

After a run of thirteen games without a win in any competition Paul Fairclough announced his resignation to take up a role as director and leaving the first team duties to his assistant Ian Hendon.

A poor run of form would follow, including a 13-game winless streak, and after five consecutive defeats left the Bees close to the relegation zone, Ian Hendon was sacked in April with two games of the season remaining.

He was then succeeded by Martin Allen, who was asked to manage Barnet on a non-contract basis until the end of the season; however, after just 3 matches, he was offered a contract from Notts County and subsequently left for them.

On 11 October 2012, Barnet confirmed a huge coup in signing the former Barcelona and Ajax midfielder Edgar Davids as player and joint head coach alongside Mark Robson.

[12] On 19 March 2014, Martin Allen was appointed head coach on a contract running until the end of the 2014–15 season, marking the start of his fourth spell as manager.

[20] In January 2018 Barnet were sitting bottom of League Two and decided to move Mark McGhee to the Technical Director position and appoint Graham Westley first team coach.

[21] Into March and still sitting at the bottom of the table, Barnet decided to sack Graham Westley and reappoint Martin Allen for his fifth spell.

[26] Assistant Manager Darren Currie took temporary charge before eventually taking the job on a permanent basis, leading the club to a 13th-placed finish.

In the 2018–19 FA Cup, Barnet, despite their status as a fifth-tier team, managed to progress into the fourth round of the competition, winning against Bristol Rovers, Stockport County, and Sheffield United.

With plans to build a new stadium on the site continually rejected Kleanthous started to look elsewhere to relocate Barnet, meaning the end of their stay at Underhill.

[38] In April 2009, a delegation from the Barnet Football Club Supporters Association (BFCSA) visited the site and interviewed the man overseeing the construction and continued development, Paul Fairclough.

A video made during the tour shows the work being carried out, throwing up some new, previously unknown information about the site, such as the construction of a swimming pool and Jacuzzi, and the fact that Highbury's floodlights were currently being stored there!

[39] The interview was particularly revealing, indicating that the development is in the first of four planned stages (suggesting a stadium for Wealdstone is still a possibility), that there were hopes to have the England senior team hold training camps there, and that the proposed centre of excellence would cost £250,000 per year to run.

There was also some indication of how Barnet could financially exploit the site, and attain a degree of self-sufficiency, as they were in the process of doing a deal with an organisation to rent out the astro turf pitches for £30,000 for one year.

The club's nickname of "The Bees", reflected in their amber and black shirts, is likely to have come from the location of apiaries close to the Underhill ground in the early years of the 20th century.