Fix a batten to the wall to fix into, this will then hold the top of
the rack away from the wall the same distance as the skirting.

You may need to pack the batten out to get the rack plumb.

If you don't have a spirit level you can drop a line (from the height
you want to fix this batten at) to the skirting using a string with a
biro tied to it. (Put the string through the top of the biro. This will
allow it to drop straight.)

Anything you can find that's suitable, bits of ply, bricks, concrete.


Put a row of bricks on edge to get 4 inches off the ground and a slab
of slate or garden tile or paving to raise it a little more. Pack it
level with sand and cement (4 to 1 & a fairly dry mix) to get it level.

You will need a level for that. A cheap one from the local car boot
will do. Don't buy a plastic one. (For some reason best known to
themselves Tesco are flogging some real shidte like that for sickmess.)

How to check a level:

You need a firm flat surface. Take some loose change with you. Lay it
on the surface and pack up one side until the bubble sits in the
middle. Turn the level end for end and if the bubble is still in the
middle, buy it.