Roshan's debut collection Delusions was published in 1995 which immediately established him as a landmark poet. The Socialist Review described him as 'a fresh and intelligent new voice in Anglo-Asian poetry'. The collection was followed by The English-knowing Men (1999) which was nominated for the Forward Poetry Prize. In 2001 the Orange Studio commissioned a collection which was published as, No I am Not Prince Hamlet integrating themes of home, language and cultural identity.

In 2002 Roshan was commissioned by UCE to write a series of short elegies to commemorate the first anniversary of the terrorist attacks in New York. This eventually formed a volume, entitled The Delicate Falling of a God (2003). A year later, his selected poetry and prose, Illusions and Delusions and Dirty Words was published by UCE Press. He was also appointed resident poet at the Birmingham Rep. (2004-06).

He has been featured in various publications, as well as radio and tv broadcasts including BBC Radio 2 and Radio 4 where he has also been a commentator on current affairs, education policy, and Hindu lifestyle and spirituality. He has appeared on a number of programmes and presented features recorded in London, Beijing, Havana, New Delhi, and Lima.