J4 DEVELOPMENTS LIMITED Company number 04295635 · Monitor this company Active Overview People 9 Financial Control Charges Documents Analysis Location Related Registered office Address29 Thorneycroft Lane, Downhead Park, Milton Keynes, England, MK15 9BB PostcodeMK15 9BB Companies at this postcode 56 Average house price in MK15 9BB £574,000 (12 sales) Map