Every postcode in the UK — on the market or not. The life of a place and the money in it, sourced, and yours to query in a sentence like you'd ask a friend, or you very own real estate analyst.
Find out what a flat is worth and where the price is heading, and Recorded sales, rents, growth measured against inflation and compared to similar properties in the same building.
Also ask it whether the streets are safe, whether the local primary school is any good, how far the walk is to a proper coffee before you hop in the tube, whether it would be a noisy street on a Saturday night, or who your neighbours would actually be — and it answers those just as squarely.
You ask Locke the way you'd ask an analyst. What's happening in this postcode? Is it let territory or flip territory? Who actually rents here? He goes to the record, runs the numbers, and comes back with an answer in plain English — and under every figure in it sits the source, the period, and the level it was measured at.
Plain English in, an evidence you can trust out.