But this is also part of the reason why lower-priced properties in these areas have capacity for growth. They share the same amenities that appeal to the buyers of the mega-mansions, and the benefits of a prime location.

In London’s NW1 postcode, which includes Regent’s Park and Primrose Hill, but also Camden Town, the value gap between the top and bottom quartiles of the market for houses was £2.675m. This was the second largest percentage gap in the country, at 243pc, with the cheapest homes costing £1.1m on average and the most expensive £3.775m.

Roisin O’Neil, of Marsh & Parsons estate agents, said: “A property in Primrose Hill will cost £1,300 per sq ft, while an ex-local authority property in Camden will cost £600 per sq ft.”

Camden is popular with parents buying properties for their children who are students at University College London. “Half of our market is first-time buyers, and 75pc have financial help from the ‘Bank of Mum and Dad’. One buyer, who was 23, was gifted a £1.3m property that they bought in cash,” said Ms O’Neil.

Other London postcodes with big value differences were TW10, which includes Ham Common, Petersham and Richmond Park in the south west of the capital. Here, the value gap was £1.5m, or 205pc.

The top hotspot in the Midlands was Edgbaston’s B15 postcode in Birmingham, where the value gap was £705,000, or 186pc.

The South West was also home to two hotspots, with a £513,130 price gap (193pc) in Padstow’s PL28 postcode and a £393,750 (170pc) difference in Ottery St Mary’s EX11 postcode.