I'm not sure it does make sense, paraman!
The Sumburgh approach, labelled 'NDB to ILS/DME Rwy 27' uses the SBH NDB as an IAF and has a teardrop pattern to the localiser. It has optional DME arcs for 'direct arrivals'.
Cambridge has an 'ILS/DME Rwy 23' approach which uses the CAM NDB as an IAF and has a teardrop pattern to the localiser. It has optional DME arcs for 'direct arrivals'.
I can't detect a material difference in the nature of the procedures, yet one has a 'NDB to' in the title, and the other does not.