I’m paid an honorarium. Is this subject to tax?

Yes. While a volunteer’s out of pocket expenses aren’t subject to tax, honoraria are taxable. Though the amounts may be very small, honoraria are subject to the same PAYE rules as a salary and therefore you should pay income tax and national insurance contributions on them.

Your club should seek guidance on this from their tax office.

See the following links for more information:

HMRC - information on honoraria