Ive got some textures for my scene each with its own material ID

Ive created a multi sub object in the material editor and applied a texture to each area.

1.wall
2.floor
3.other bits

How can i apply a different UVW map to each area as one overall UVW map does not do the trick as some textures display stretched?

select the faces/polygons you want to apply the uvw to. apply the uvw, adjust to your liking. convert back to editable whatever. repeat on other areas.