I agree with what Porky Tokyo just wrote.
Regarding production location, I haven't read anywhere that Tata plans to move these jobs from the UK to India. All I've heard is that Tata has bid to buy Jaguar and Land Rover from Ford.
That takes me to the issue of where goods are made. I have no doubt that Jaguars and Land Rovers made in the UK are of fairly decent quality. I would expect these cars to be made to broadly the same quality if production were moved to India.
However, I don't think that's in the offing for the short/medium term. I think Tata will keep production within the EU to enable easier movement of products within the vast (and expanding) EU market.
Tata would no doubt set up additional manufacturing capacity in India to meet local Indian demand and also Asian demand more generally. Maybe one day they would team up with a local Chinese producer to at least assemble cars in China too.
I think the Tata bid can only be a good thing. These brands are desperately short on cash and they need this investment just to stay alive. There's no point proudly talking about manufacturing heritage when factories are closing all around you.
Turning to the 'allegedly negative perceptions that might follow with Indian ownership', IMO it's just prejudice and bigotry. Much of the world's manufacturing happens in China, India and elsewhere in Asia. That's just a simple fact. People don't like to acknowledge that their Ralph Lauren polo shirts were made in the Philippines and their Nike cross trainers were made in Indonesia but it's the reality.
Those people work in conditions which we in the West would find unacceptable. They get paid much less than we would accept. They produce goods for multinational companies who package their goods as "Designed by Apple in California". It's a practice that occurs due to the prejudice that does exist.