Do they still have a navy? Haven’t they sold all their ships to India?
Though certainly smaller than it used to be, the Royal Navy is still the third largest navy (by tonnage) in the world, after those of the United States and Russia. It’s still over twice the size of any European navy, and 50% larger than those of China or Japan - more than three times the size of India’s.
I know it’s popular to run down the British military capability, but the Royal Navy could still match the combat strength of any Navy except the US Navy - and as it’s unlikely it will need to match the combat strength of the US Navy in the near future, that is probably sufficient for most purposes.