There will be a House of Commons vote on Wednesday on the proposed election and May will need Parliament's backing to hold a vote before 2020.
Buying in India is usually cheaper unless you have a pre-existing disease
Opinion polls have suggested that while big business is broadly in favour of staying in the EU, small firms have been evenly split in what looks like a photo-finish.
Prime Minister Narendra Modi said India and the United Kingdom are economically made for each other.
Prime Minister Narendra Modi's three-day visit to Britain has seen India and the UK agreeing on Rs 90,000 crore deals.
