Here's how expensive London is, in terms of clothing.

ItemLondon (GBP)India (Rs)Costlier by
Socks51004X
T-shirt103502.3X
Reversible jacket3020001.2X
Formal shoes2515001.3X
Cooling glasses101505.3X
Suitcase5615003X

Nothing's less expensive than in India. Similarly for groceries.

ItemLondonIndiaCostlier by
Curd 1/2 kg0.45182X
Cucumber (one)0.49313.1X
Beans (250g)0.99204X
Baby corn (125g)0.99184.4X
Carrot (kg)0.45241.5X
Cabbage (kg)0.52182.3X
Cauliflower (one)0.69252.2X
Spinach (kg)4.3??0X
Onion (kg)0.46103.7X
Chilli (kg)4.39843.9X
Cashew (kg)15.93603.5X
Apple (kg)1.29601.7X
Milk (litre)0.6182.7X