In 2015 he started playing for Dillie Keane in her solo show in the UK and Ireland, and in 2016, his collaboration with Peter Straker - ‘Peter Straker Sings Brel‘ - was described by The Scotsman as ‘dripping with class.’ The two have appeared together at the Edinburgh Festival Fringe, BBC Radio, STV, on talk shows with Stephen K Amos and David Baddiel, and at theatres and clubs across the UK. Their filmed show at the St James Theatre, with special guest Leee John from Imagination is due for release in 2017.
He has also played for the award-winning shows ‘Christine Bovill’s Piaf’ and 'Christine's Bovill's Paris'.
Gulliver has a long-running collaboration with baritone Colin Baldy (‘Noël Coward at the Café de Paris’ and ‘Mrs Worthington and Friends’), and also appears solo, performing songs by Noël Coward and Tom Lehrer.