''Blake's 7'' Simon won the part of
Dayna Mellanby in the
BBC 1 television
sci-fi series ''
Blake's 7'' after being talent-spotted while still at the Central School of Speech and Drama. She played Mellanby in the third and fourth series, originally broadcast between January 1980 and December 1981. The character was an expert combatant and highly knowledgeable about weapons. Andrew Muir, author of a book about the series, felt that Simon provided "energy, vitality, innocence, danger, and a real physical presence" to the character. Another author who wrote about the show, Tom Powers, felt that Mellanby and the other women heroes were often eclipsed by the male leads, and that over the series, Mellanby, who did not achieve her ambition to avenge her father's death by killing the villainous character
Servalan, "lost her agency as a heroic figure of
lex talionis". Simon was invited to return to the role in audio productions by
Big Finish but declined, but has played other roles for the company. She also featured in two other programmes in 1980: the sitcom
The Cuckoo Waltz and the
teen drama The Squad.
Royal Shakespeare Company and Royal National Theatre Simon has performed frequently with the
Royal Shakespeare Company (RSC) and
Royal National Theatre. she was cast as one of the three "weird sisters" in
Macbeth alongside Kathy Behean and
Lesley Sharp later that year. She was the first black woman to appear in a Shakespeare play at the RSC. In the same RSC season, she had roles in
Much Ado About Nothing, as a spirit in
The Tempest and as Iras in
Antony and Cleopatra. In 1997, Simon told academic Alison Oddey that working with
Michael Gambon and, particularly,
Helen Mirren on
Antony and Cleopatra provided an early influence on her career. She was with the RSC for two consecutive two-year season cycles. In the second cycle her roles included Nerissa in
The Merchant Of Venice and starring as Dorcas Ableman in
Golden Girls, which became a breakthrough role for her. The
Financial Times reviewer
Michael Coveney wrote of the latter role that "The immense power and beauty of this actress is at last given proper opportunity by the RSC."
Ros Asquith of
The Observer felt that Simon's performance was among the most thrilling in London, and
The Daily Telegraph critic Eric Shorter praised the cast's efforts but felt that the play suffered from overly slow pacing. The central role of a black runner drew on Simon's own experience of being an athlete; the play's author,
Louise Page, later related that the play had been rewritten from an ensemble piece, as "the sheer dynamism Josette brought to the role meant that it was her journey through the play with which the audience identified". Simon has been at the forefront of
colour-blind casting, playing roles traditionally taken by white actors. From the mid-1980s to the late 1990s, a time when it was unusual for black women to feature as leads in Shakespeare plays, Simon played several major roles for the RSC. Her first leading role, and the first for a black woman at the RSC, was as Rosaline, in ''
Love's Labour's Lost, directed by Barry Kyle, in 1984. Jami Rogers, in her book British Black and Asian Shakespeareans'' (2022) commented that in Kyle's production, where the women were dressed in
Belle Époque-style silk dresses, Rosaline's clothing "immediately marked her as a woman of high status... For the first time on a major British stage, an African-Caribbean woman portrayed an intelligent, witty and strong leading Shakespearean character." Rogers described the reviews of the production as "glowing". She noted that some reviewers and academics "treated Josette Simon's casting... as a novelty", criticising the description of integrated casting as an "experiment" as "deeply problematic as it infers the practice is an aberration rather than what it was [by 1990], a common practice". Simon told Oddey that despite being conscious of discussions about whether audiences would accept a black woman as Rosaline, "I also felt that you should be allowed to fail, because if you don't take risks you can't reach higher planes" and that she had focused on her performance rather than debates around her casting, saying that "If I had thought about those things beforehand, I would not have set foot on the stage". She told Veronica Groocock, author of
Women Mean Business (1988), that sexism had been as much of an issue as racism in her career, although the problem reduced as she gained larger roles. Nine years later, she expressed her dissatisfaction with the lack of good roles for women, which she ascribed to the industry being male-dominated and complained that, "I think that we've seen more and more trivialising of actresses, requiring them to look gorgeous and take their top off at some point." In 1987, Simon appeared for the RSC again, in the lead role of Isabelle in
Measure for Measure, directed by
Nicholas Hynter; her performance received some critical acclaim, whist other commentators felt it was "underpowered and lacking in emotional intensity".
Irving Wardle wrote in
The Times that the plot and casting demanded that Simon's "Isabella should be the only nobly uncorrupted figure on stage... and Miss Simon, a burnished icon of impassioned purity, fulfills it to the letter... The penalty is that she emerges as less humanly interesting than the surrounding hypocrites and sensualists."
The Sunday Telegraph critic
Francis King considered her performance to be "appealing and tough". Coveney of the
Financial Times felt that Simon "fails... with the full range of the role. Like so many of this season's leading ladies, she is technically underpowered." The play transferred to the
Theatre Royal, Newcastle and then to the
Barbican in 1988.
Financial Times critic Martin Hoyle wrote of the Barbican production that Simon "has transformed her voice, both timbre and enunciation.... Incisive, vocally varied, though slightly lacking the full weight for the early emotional climaxes, she gives the best performance I have seen from her, dignified and touching." In
The Times in 1991,
Benedict Nightingale opined that by casting Simon as Isabella and Rosaline, and
Hugh Quarshie in other plays, the RSC had been "launching two performers of huge potential". In 2014, the RSC's Head of Casting, Hannah Miller, explained that the RSC's policy was to select the best actor for the role regardless of factors including gender, race, class, and disability status. The drama and theatre scholar Lynette Goddard argued that despite the RSC's inclusive policy, black women actors still had limited opportunities to progress, "which makes Josette Simon's case all the more compelling". Goddard commented that "the more well known Simon became, the less compelled reviewers felt to mention race". Simon told David Jays of
The Guardian in 2017 that "I hate the term 'black actor'... I'm black, which I'm proud of, but it doesn't mean anything. You're an actor, full stop."
Critics' Circle Theatre Award and
Plays and Players Critic Awards. Simon returned to the RSC in 1999 as Queen Elizabeth in
Don Carlos. Nightingale described her performance as "vivid and vital". Next, she was Titania/Hippolyta in ''
A Midsummer Night's Dream. The Financial Times'' reviewer wrote that Simon spoke "Titania's lines with an almost jazz musicality, dances, moves, and stands with compelling power. Her stance alone is more regal than that of several of today's ballerinas." Paul Taylor of
The Independent called the production's
Nicolas Jones and Simon "the sexiest, most commanding Oberon and Titania of recent years". In 2017, Simon took the role of Cleopatra in
Antony and Cleopatra for the RSC.
Michael Billington wrote for
The Guardian that "Simon seems born to play Cleopatra and she gives us a hypnotically mercurial figure whose eroticism is expressed through a permanent restlessness", although he felt that Simon employed too many voices in the role. Making a similar criticism about the range of accents used,
Ian Shuttleworth of the
Financial Times felt that Simon failed to play to her strengths as an actor and concluded that "On the occasion of Simon's first RSC appearance this century, she is heartbreaking in all the wrong ways."
Ann Treneman of
The Times felt that Simon, with a performance that was "quite bonkers" at times, provided the highlight of the show, despite a "lamentable lack of chemistry" between her and Anthony Byrne as Antony. The literature scholar Jyotsna Singh commented that critics' responses, although positive, contained "racialized and gendered inflections", and tended to highlight Simon's "rendering of a histrionic and passionate woman, falling back on Western sexual stereotypes about 'exotic' women of colour" while not considering the multi-faceted nature of the character that Simon herself spoke about. In
The Rise of the English Actress (1993), author Sandra Richards wrote that Simon's "special brand of integrity has gained her a number of 'strong women' roles that are setting a precedent for British actresses from ethnic minorities and reinforcing the contemporary actress's need for roles that not only avoid stereotype but also challenge the limits of her own personality."
Other roles Simon took the title role in the 1985
BBC Radio 3 production of
Mirandolina. She was the lead in
David Zane Mairowitz's play
Dictator Gal, broadcast on the same station in 1992. Her character was married to an exiled dictator who was dying in hospital. Simon's character sang a range of songs, including
Richard Wagner and
Motown compositions in an attempt to revive him. Her performance earned her a
Prix Futura Award nomination. Simon's film appearances include the part of
Dr. Ramphele in
Cry Freedom (1987). In the
San Francisco Chronicle,
Judy Stone praised Simon's performance as Joanna, commenting that "she displays a quality of grace all too rare in today's films". The 1992 television play
Bitter Harvest had Simon in the lead role, as a woman who has gone missing after travelling to the
Dominican Republic as an aid worker and whose parents go there in search of her. The English Literature scholar Claire Tylee considered that Simon's character was a "credible protagonist", but the film was adversely affected by a mismatch between its thriller and family plotlines. After Simon had already accepted the leading role based on an outline the producer
Charles Pattinson pitched, the scriptwriter
Winsome Pinnock altered the storyline to include tensions in the mixed-race family. According to Tylee, neither Simon's character or the character of her father were enough like typical thriller heroes to "successfully play on thriller conventions, and the plots end by humiliating both of them, fetishising the black female body along the way." In 1993, Simon starred alongside
Brenda Fricker in the two-part television series
Seekers, written by
Lynda La Plante. Their characters discovered that they were both married to the same man, who has disappeared. They later worked as partners in the detective agency that he had founded. Lynda Gilbey of
Sunday Life wrote that the show was "a first class detective drama... beautifully plotted, wonderfully performed". The
Newcastle Journal reviewer Norman Davison commented that the two lead actors "invested the roles with the sort of power that all La Plante women seem to have and the men were all the wimps". Nightingale of
The Times wrote in a negative review of
Jean Genet's play
The Maids in 1997 that Simon provided the "one strong performance". She had a recurring role as a defence lawyer in
Anatomy of a Scandal in 2022. Her supporting performance in
Crossfire (2022) was highlighted as one of the few positives in a negative review of the series by Anita Singh of
The Daily Telegraph. Simon has played senior police officers in
Silent Witness (1998), and
Broadchurch (2017), In 2019 she appeared as Grams in the film
Detective Pikachu. ==Personal life==