Median property price in London is £542k [0]

Assuming a 90% mortgage that's 487k mortgage

That's two people on £70k each at a 3.5 multiple. £60k at a 4x multiple.

Two people on £180k would get you a £1.5m house, twice the average semi.

[0] https://landregistry.data.gov.uk/app/ukhpi/browse?from=2025-...