Hopefully he won't have needed to 'work it out' for himself, given that, back on page 2 (now of 6!), I wrote to him ...in case the OP hasn't worked it out, you can cut off the plug and either wire in a standard plug, or simply connect directly to a suitable fused connection unit.
They may differ from opinions you've received from elsewhere, but I think that everyone here would probably agree that you should cut off the plug and connect either a UK 13A plug or wire it directly into a FCU.
Kind Regards, John