[rory]

You are correct, per according to Consumer Price Indices: a brief guide by the Office for National Statistics (directly indexed pdf, so google the name to find), here are some selected examples of UK CPI factors and their weights.

Class: Weight

Food: 93

Alcoholic beverages: 20

Clothing: 59

Actual rentals for housing: 62

Electricity, gas and other fuels: 48

Purchase of vehicles: 38

Other recreational items, gardens and pets: 32

Education: 21

Restaurants and cafes: 88

These weights feel intuitively off to me, but I imagine costs like rent and education look low because only a subset of the population is paying for them, even if they are huge cost to members that cohort.