Buying from India into the UK is going to be subject to import duty IF customs and excise are doing their job. Not worth it IMHO. Amazon will work out cheaper and you can claim the VAT back if you're a business.

Also the warranty is with the seller in India. Jolla would be in their rights to ask you to send it back to the retailer. As it's an Indian import you'd only have 1 year warranty instead of 2 in the EU.