Hi @ayo.adesina,
On our side we use the Google geocode API to geocode addresses, the geocoded result of “Flat 206, Martingale House 5 Raine Street, LONDON, Tower Hamlets, GB, E1W 3AQ” being “5 Raine St, E1W 3RU, London, The United Kingdom”.
To take this example, it seems that the street name ‘5 Raine St’ matches another post code area which has essentially caused some confusion in the Google engine, producing a formatted address which is different to the originally intended address.
This has become a known issue for us and we are working to improve our geocoding mechanism as we speak to prevent this issue. To improve the compatibility between the addresses that you pass to our API and the geocoded result that we acquire, we currently recommend these address best practices.