Bhaskar, 41, and Syal, 44, married in January. Over the years, the comedy duo has played each other's parents, grandparents, lovers and enemies.
Syal told Eastern Eye, a leading British Asian weekly: "Obviously we're both delighted, babies are wonderful gifts and both our families are walking about with big grins on their faces."
Syal, who has a 12-year-old daughter Chameli from her first marriage, said: "At least this proves we're pukka desis as well - marriage, house and baby all in the first year, shabaash!"
After working together for over a decade in various TV programmes and films, romance blossomed during a promotional trip for Syal's film "Anita and Me" to Australia in 2003.