2.6.4.1
Street names, towns and localities must include all the punctuation that is in the official version of their name. For examples, see Section 5.4.
2.6.4.2
If a type 2 Street Name includes the name of a town, locality or type 1 Street, then it must include the same punctuation as the Record for the town, locality or type 1 Street itself.
2.6.4.3
Brackets are only permitted if they occur in the name of a motorway in a type 2 Street Name or a type 3 Street Name, for example “A1(M)”. They are not permitted to designate type 3 Streets as Trunk Roads – “A36(T)” is incorrect.
2.6.4.4
A forward slash “/” is only permitted in type 3 Streets that are Public Rights of Way which are identified by the PRoW prefix “Y”.
2.6.4.5
In practice, for most authorities the only punctuation marks likely to be used are the apostrophe and the hyphen.