- In Wales, the inclusion of Welsh language street names is required under the standards of Welsh Language created by the Welsh Language (Wales) Measure 2011. The Standards were introduced to replace the Welsh Language Schemes which were developed by each local council. Most local councils continue to refer to their own Welsh Language Scheme in their guidance on street naming.
- The Measure does not provide detail of how the Standards affect street signage. The Welsh Language Commissioner has published Guidelines for Standardising Place-names in Wales (19 June 2023) which deals principally with place names rather than street/property names but states, “They are not necessarily applicable to house or building names, but they do cover many valuable principles which may be applied to those names or when coining names for new developments. There is also associated technical guidance that can be accessed at https://www.welshlanguagecommissioner.wales/policy-and-research/standardisation-of-welsh-place-names/technical-guidance?id=1187#?culture=en-GB
- The Welsh Language Standards (No. 1) Regulations 2015 detail extensive standards that apply to local authorities in Wales. There are no standards that deal specifically with street signs. However, Standards 61-63 could potentially apply (Standards relating to signs displayed by a body). Without an explicit reference to street signs it is advised that there is further engagement with the Welsh Language Commissioner to obtain a definitive view.