Good Afternoon ClaireSmith56,
The local currency of India is the Indian rupee, but it is not available for purchase in the UK.
It is recommended that you take sterling and/or US dollars with you to exchange into local currency when you arrive to your hotel. In addition to cash, you may wish to also take a credit card as most hotels in India will accept credit card payment.
This information should be shown in your itinerary.
Kindest Regards,
Amy