ALTMAN SOLON LLP Company number OC425225 · Monitor this company Active Overview People 4 Control Documents Analysis Location Related Registered office Address35-38 Portman Square, North Suite, 5th Floor, Marylebone, London, United Kingdom, W1H 6LR PostcodeW1H 6LR Companies at this postcode 57 Average house price in W1H 6LR £307,000 (1 sales) Map