Gift from parents settled Abroad

My parents are settled in the UK where they have been living more than 50 years. 

I am living and settled in India. They want to give me 10 thousand pounds sterling. 

Would I have to declare this in my income tax returns. 

Also is this amount taxable. I think gifts from parents used to be tax free. 

Also do I need any documentation to show the gift. 

Thank you in advance.