From the HSE website
A "scafftag" in itself may not be a legal requirement, but it's presence would indicate an understanding of the regulations and signify an attempt to comply with them.
If there is no tag then there is unlikely to be a design for the scaffold or any documentation to show that an industry accepted standard design has been followed.
Is there an access ladder, is it secured to the scaffold and against un-authorised access?
Scaffolds which encroach over the highway (including pavements) require a license under Section 169 of the Highways Act 1980, which are issued by the local Highway Authority. Scaffolds should never be erected or dismantled over people or busy pavements. If the work is likely to present a danger to the public, you should consider applying for a footpath or road closure to eliminate the risk of a member of the public being injured. Erection and dismantling should be done inside a segregated area and during times when there are fewer members of the public in the vicinity.
A "scafftag" in itself may not be a legal requirement, but it's presence would indicate an understanding of the regulations and signify an attempt to comply with them.
If there is no tag then there is unlikely to be a design for the scaffold or any documentation to show that an industry accepted standard design has been followed.
Is there an access ladder, is it secured to the scaffold and against un-authorised access?