Ryan Harold Peniston was born in November 1995 to English-Irish father Paul and Malaysian mother Penny (née Gok)[2] and grew up in Great Wakering near Rochford.

[8][9] During the COVID-19 pandemic in 2020, Peniston took part in the 'Battle of the Brits' tournament and performed well, losing only on final set tie-breaks against top-50 players Dan Evans and Cameron Norrie.

Peniston made his ATP main draw singles debut at the Queen's Club Championships as a wildcard, where he upset top seed and world no.

[22] In the qualifying for the French Open, Peniston overcame Altuğ Çelikbilek before going down in a final set against experienced Moldovan Radu Albot.

201, he received a wildcard for the Queen's Club Championships and defeated Ugo Humbert in the first round,[24] before losing his next match to second seed Holger Rune.

[25] Given a wildcard entry into Wimbledon, Peniston lost to Andy Murray in the first round in a match played on Centre Court.