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Thank you for your question. As a UK resident for tax purposes you are taxed on your worldwide income and gains.
You report the gain made from sale of property on supplementary pages SA108 when you file your tax return.
You claim foreign tax credit relief against tax suffered on that gain in India.
CGT rate applicable would be 18%, 28% or a combination of both depending on taxable income including the gain. You would claim annual gains allowance against the gain and the rest is taxable.
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