https://www.gov.uk/driver-certificate-of-professional-competence-cpc/having-driver-cpc-through-acquired-rights

This is the latest VOSA/DVSA update and mentions in one section "commercial use".

The definition of non-commercial use is covered in the case of Lundburg in Sweden brought about by the question of the need to fit a tachograph in his racing car transporter. Although it specifies the carriage of goods I've seen a letter from the EU that states this will also be applied to the carriage of passengers:

REFERENCE
Legal act.
Articles
concerned Parties Title Question Summary of the Court ruling
C-317/12
Judgment of the
Court of 3
October 2013
Regulation (EC)
No 561/2006,
Article 3(h)
Daniel
Lundberg
Definition of the
term "noncommercial
carriage of
goods"
Under the obligation to install recording
equipment to vehicles, derogation is
made in respect of the non-commercial
carriage of goods. Can the expression
"non-commercial carriage of goods" in
Article 3(h) of Regulation (EC) No
561/2006 be interpreted as covering
carriage of goods by a private individual
as part of his hobby which is in part
financed by financial contributions from
external persons or undertakings? Are
the following relevant to the assessment
of what constitutes” noncommercial
carriage of goods” (a) the driver makes
the journey only for his own purposes?
(b)There is no payment for the carriage
per se? (c) The amount of the financial
contribution and/or how large is it in
relation to the total cost of the hobby
activity?
The concept of "non-commercial carriage of goods"
laid down in Article 3(h) of Regulation (EC) No
561/2006 of the European Parliament and of the
Council of 15 March 2006 on the harmonization of
certain social legislation relating to road transport
and amending Council Regulations (EEC) No
3821/85 and (EC) No 2135/98 and repealing Council
Regulation (EEC) No 3820/85 must be interpreted as
covering the carriage of goods by a private individual
for his own purposes purely as part of his hobby
where that hobby is in part financed by financial
contributions from external persons or undertakings
and where no payment is made for that carriage per se.

My bus number (if any): RML2532