f0522209_Creating_URIs___data_gov_uk__Example_and_Notes
[Suggested Pattern] /id/{type}/{id}/{child-type}/{child-id} [Example and Notes] 
http://reference.data.gov.uk/id/department/bis/unit/finance-commercial-group These URIs should be used when the identifier for a real-world thing is only unique within a particular parent thing. Examples are units within organisations or junctions on motorways. They should be handled in the same way as above.
Creating URIs | data.gov.uk
Example and Notes