Where can I find DIY store supplies in Northolt?

DIY store supplies can also be found in these cities:

Addlestone Barnet Borehamwood Brentford Chalfont Saint Peter Chesham Chessington Croydon Edgware Egham Feltham Greenford Harrow Hayes Isleworth Kingston upon Thames London Mitcham Northwood Perivale Potters Bar Ruislip Shepperton Slough Southall Stanmore Sutton Twickenham Uxbridge Walton-on-Thames Windsor invalidcity

You can also find this in Northolt:

Kitchens Bathroom Cabinets Flooring Flooring Worktops Booklets Stamps Envelopes Stationery Business Cards