I am looking for a cutter belt for,
Atco tractor mower 12/36 F016 L80188
Pretty please can any body advise me, even an alternative temporary measure
Or may be someone might have the mower and can find the code numbers on their belt
Kindest regards. (Removed for privacy)

Stay tuned a knowledgeable volunteer (we are all volunteers here with full time jobs) will be able to help you Google the information. 'Pretty please' doesn't exactly work here.

Have you tried googling, or calling your hardware store ?

Hmm, not sure where you live, but I pulled this information up:
Buy Spare Parts for Atco MOWER TRACTOR 12/36 - F 016 L80 188 - Powertool Spares (http://www.powertoolspares.com/tool/atco/spares-and-accessories-for-mower-tractor-12-36/f016l80188/spares/)

Thank you, aliseaodo, for your effort and your Google information.