Hi Lucinda,
Sorry for the delay in my response. That's great news! The provisional flights are as follows:
You will depart from Heathrow at 22:00hrs and arrive in Delhi at 10:50hrs on the 15th April. On your return journey, you will depart from Delhi at 12:55hrs and arrive back at Heathrow at 17:30hrs on the 23rd April.
I hope this helps.
Kindest regards,
Monty