Standard for the Use of HL7 Version 2 in the UK (HL72UK)
This standard specifies a UK profile for HL7 version 2 to which UK implementations of the standard shall conform. The normative content of the document is supported by Implementation Guidance and Examples that provide practical help in implementing the standard.
The standard has been motivated by the need to address the particular needs of UK-based healthcare systems that are not specifically addressed by the HL7 Version 2 standard and the need to implement certain HL7 features in a standard way in the UK.
The latest version of the standard (vA.3) can be found here.