| Line | Roll Up Total Concept | Roll Up Items Concept | Count |
|---|---|---|---|
| 1 | ck0001087711:AggregateOperatingImpairmentLossesProvisionsAndCharges | ck0001087711:ProvisionsForOtherLiabilitiesAndCharges | 1 |
| 2 | ck0001087711:AggregateOperatingImpairmentLossesProvisionsAndCharges | ifrs-full:ImpairmentLossOnFinancialAssets | 1 |
(Note that this is a work in progress!)