Gemma studied at the Purcell School, the Royal College of Music, University of York, Royal Northern College of Music, Sibelius Academy (Helsinki) and Helsinki University, with generous scholarships from the Tillett Trust, the Musicians' Benevolent Fund, the Tunnell Trust, the Kendall-Taylor Award (RCM), Favre-Gilly Foundation, Dorothy Grinstead Memorial Fund, and the Else & Leonard Cross Trust (RNCM).

Gemma's Piano teachers were Sim Yuen, John York, Irina Zaritskaya, Martin Roscoe and Jeremy Young. Gemma also participated in masterclasses at IMS Prussia Cove, the Banff Centre Canada (as resident artist), and the Pablo Casals Festival (Prades) with Ferenc Rados, Pavel Gililov, Itamar Golan, Ben Zander, William Fong and Chris Elton.

Gemma has performed at notable venues in the U.K. such as the Queen Elizabet​h Hall, Buckingham Palace, St. John's Smith Square, St. Martin-in-the-field's, Ribble Valley International Piano Week, Lancaster International Concert Series, Universities of Oxford, Cambridge, York, Lancaster and Sheffield, and on BBC radio and BBC television. 

1st prizes include the RNCM Concerto competition, the National Derby Piano Concerto competition and the National Toshiba Chamber Music Awards. Overseas concerts have included the Ftan Institut (Switzerland), Utrecht Musikcentrum, Rolston Hall (Canada) and Martinu Hall (Czech Republic). Gemma has performed Piano Concerti by Chopin, Schumann, Shostakovich, Ravel and Franck in the U.K. and in the Netherlands under conductors such as Martyn Brabbins and Darrell Davison.

In chamber music Gemma has collaborated with Steven Isserlis, Ian Clarke, Guy Johnston (BBC Yo​ung Musicians Winner), Jenny King (BBC Symphony Orchestra), David Waterman (Endellion Quartet), Denis Bouriakov (Principal Flute, Los Angeles Symphony Orchestra), Daniel Bates (ROSL Gold Medallist), Jonathan Cohen, Naomi Williams (Royal Opera House), Katherine Baker (Principal Flute, Royal Opera House), Ani Kalayjian (Anglo-Czech Competition Strings Winner), Marie Macleod (BBC Young Musicians Strings Winner) and The Camarilla Ensemble (ROSL Ensemble Winners).

Gemma has acco​mpanied instrumental masterclasses given by Alexander Baillie (at Bremen Hochschule), David Waterman, Steven Isserlis (at IMS Prussia Cove), Steven Doane (at RCM), Benjamin Zander (Switzerland), Ralph Kirshbaum (at RNCM), Peter Moore and Ian Clarke.

Gemma has held teaching positions at the University of Sheffield's Department of Music, Chetham's International Piano Summer School, Christ's Hospital School (H​ead of Piano), Cherry Pie Music London (Head of Piano) and Westminster School (London). In 2019 Gemma joined the accompaniment team at Chetham's.

Gemma's compositions have been performed by the London Mozart Players, Northern Sinfonia and on BBC radio and BBC television. Gemma has won a number of composition awards including a prestigious Boosey & Hawkes prize.