Best known for her portrayal of Kate Rowan in ITV's 'Heartbeat'
Niamh has starred in numerous other TV dramas including 'Lewis', 'A Touch of Frost', 'A&E', 'Too Good To Be True', 'Little Bird', 'Loving You', and 'State of Mind'.
Film credits include: Clint Eastwood's latest directorial piece 'Hereafter', 'In Love with Alma Cogan', 'The Kid' and 'Five Minutes of Heaven'.
Her theatre work includes: seasons at the RSC playing among other roles Juliet, Desdemona, and Rosalind. 'Women, Power & Politics' (Tricycle), 'Andersen's English' (Hampstead/UK tour), 'Dancing at Lughnasa' (Old Vic), 'Crestfall' (Theatre 503) and 'The Enchantment' (National Theatre)
She has also taken part in dramas for Radio 4 including 'The Professor', 'To be a Pilgrim', 'The Wall' and 'Cider with Rosie' and played Viola , Rosalind and Adrianna in the Arkangel /Penguin productions of 'Complete Shakespeare'