Vehicle markings
Projections markers
2 markings, in the order the Highway Code lists them. Each one has a page of its own, so you can link to a single marking.
Every one, in the order the Code lists them
What the Highway Code says about this group
Both required when load or equipment (eg crane jib) overhangs front or rear by more than two metres
The rest of vehicle markings
3 more groupsOne search covers the whole Code and the whole library
Nobody looking something up knows whether the answer is a rule or a marking, so there is one field for both, and neither needs an account.