On Wed, 6 Apr 2016 00:12:32 -0700 (PDT), harry
wrote:

snip

As there is no tax to pay, I can't not pay it can I?

That was always interesting 20+ years ago when getting my 'Tax disk'
for my electric car from the local Post Office.

I would hand over my paperwork (renewal form and insurance cert) and
get given a tax disk. No cash, no MOT and that raised a few eyebrows.
;-)

Cheers, T i m