The 25mm P-clips eventually came. So, the fuel tank breather and the tank end of the carbon canister hose/pipe are now secured adequately:
Now working on connecting the charcoal canister to the hose at the tank, so I'm routing a line under the diff., through the inside of the tunnel to the charcoal canister which is hiding just outside the engine bay and between the LHS (front) upper and lower wishbones.
Cheers,
Glen