The club reached what was then the Conference South in 2011 after winning the play-off final of the 2010–11 Isthmian League Premier Division.

The club were relegated from the Premier Division in 1961–62 but were promoted two seasons later finishing in 4th place after narrowly missing out the year before.

In the same season the First Round Proper of the FA Cup was reached once again as Charlton Athletic were the visitors to the Angel Ground.

Tonbridge Angels FC was then formed and allowed to complete the fixture list on the understanding that relegation would result at the end of the 1975–76 season, wherever the club finished.

A battle lasting up to three years that went as far as the High Courts ensued before the club was eventually offered a new ground at Longmead, its present home.

Former Tottenham Hotspur man Terry Naylor took charge and lasted for just seven games, in that time only managing to earn a single drawn match.

In 1996–97 Tonbridge had an improved season finishing in 8th place and in the summer of 1997 Paul Emblen broke the club's record transfer fee, moving to Charlton Athletic for £7,000.

His brother, ex-Angel Neil, has appeared for Millwall, Wolverhampton Wanderers, Crystal Palace and Norwich City.

A run of fourteen games at the end of the season, in which just one defeat was suffered, secured a final league placing of seventh.

They escaped the drop by winning two and drawing one of their last four matches, leaving them four points ahead of relegated Wisbech Town at the end.

That run continued into the 2003–04 season with a club record of 26 league matches unbeaten being ended in December 2003, at which point the Angels were comfortable leaders of the Eastern Division.

Walker left the club shortly after due to a loss of sponsorship and the Angels replaced him with player-manager Tony Dolby.

After an initial period of mixed results, Dolby steadied the ship and brought in Mike Rutherford as assistant coach before keeping the Angels in the title battle until the penultimate game of the season.

Tooting & Mitcham were defeated in the Semi-Final match before a dream Final pitted the Angels at home to old Kent rivals Dover Athletic.

Tonbridge won the game 4–3 with Lewis Taylor scoring the winner just 10 minutes from the end to confirm the Angels' promotion into the Conference South for the 2011–12 season, the highest achievement ever by the club.

The club's inaugural campaign in the Conference South saw them finish in 9th place after enjoying a moderately successful season.

The following season, the club narrowly escaped relegation and reached the Kent Senior Cup finals where they lost 7–1 at home to a Charlton XI.

Manager Tommy Warrilow left the club after 7 years to be replaced by long-term Sutton United coach Steve McKimm.

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After an abandoned 3rd Qualifying Round replay with Hampton in front of over 800 fans, the game was rearranged and drew an impressive attendance of 1,274.

Season 1997–98 saw an attendance of 2,412 when the full Crystal Palace first team squad appeared for a charity match in aid of two local hospices, making 30 March 1998 a memorable evening in the club's history.

The current record attendance for a competitive match at Longmead is 2,806, which was set on 26 December 2023 in the National League South fixture against Maidstone United.

The biggest win at Longmead Stadium was on 5 September 2017 when the Angels defeated Herne Bay 10–1 in the Isthmian League Cup.