I haven't used patch materials much before now so maybe there's an easy solution. Here's what I get when I drop a brick image on to a cube. As you can see the image is rotated on different patches. Is this how it's supposed to work? Is there a way to rotate them round the right way? Thanks.

Yes, select the patch, and right-click. Choose "Rotate images" from the menu.

When I have to rotate a lot of images I use the shortcut keys [Shift P] and [Ctrl R] to quickly select and rotate the patch images.

I seem to recall I had to assign the [Ctrl R] shortcut via Tools/Customize/Keyboard but the [Shift P] is the standard shortcut for Group Patch selection.

Ah....that sounds familiar. Thanks guys!