Upvote:9
There is no limit for bringing money into the UK, however amounts of 10000 euro must be declared:
e.g. from the VisitLondon site:
Declaring Your Goods When entering the UK from a non-EU country, you must make a declaration to customs if:
You have 10,000 euros or more (or equivalent) in cash
The amount you can take out of India is covered thoroughly in this question:
How much cash can I carry while travelling from India to Poland?