Britain has more than 12,500 million pound streets, where properties are typically worth at least seven-figure sums, according to a website.
The total figure comes to 12,541, according to calculations from Zoopla.
The South East of England has the most million pound streets, at 4,707, putting it ahead of London which has 4,523.
At the other end of the spectrum, there are 27 million pound streets in Wales – which is a fraction of the number situated in some Home Counties towns which are popular with London commuters.
For example, there are 116 million pound streets in Harpenden in Hertfordshire and 183 in Guildford in Surrey, the research found.
Grainne Gilmore, head of research at Zoopla said: “Zoopla data shows where housing stock and prime locations converge to create some of the most expensive addresses in the UK.
“Clusters of expensive homes are not unusual as the cachet of an area starts to create an appeal of its own, which can factor into what a home is really worth.
“London dominates the country’s prime property market, but it is being challenged by the South East in terms of the number of million pound streets, reflecting the rise in demand and pricing seen in this market, as well as its housing stock mix and its geographical size.”
For the 12th year in a row, Kensington Palace Gardens in west London was identified by Zoopla as Britain’s most expensive street, with the average home there priced at £35,991,500.
Here are the numbers of streets across Britain where the average home is worth £1 million or more, according to Zoopla:
– South East England, 4,707
– London, 4,523
– East of England, 1,761
– South West England, 527
– North West England , 318
– West Midlands, 259
– East Midlands, 130
– Yorkshire and the Humber, 118
– Scotland, 114
– North East England, 57
– Wales, 27
And here are Britain’s most expensive streets, with their postcode area in London and the average property price, according to Zoopla:
1. Kensington Palace Gardens, W8, London, £35,991,500
2. Courtenay Avenue, N6, London, £18,639,000
3. Grosvenor Crescent, SW1X, London, £17,560,000
4. Ilchester Place W14, London, £13,805,500
5. Manresa Road, SW3, London, £12,182,000
6. Cottesmore Garden, W8, London, £11,572,000
7. Compton Avenue, N6, London, £10,550,000
8. Mulberry Walk, SW3, London, £9,630,000
9. St Albans Grove, W8, London, £9,537,000
10. Egerton Crescent, SW3, London, £9,336,000