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| Tartan Name | Lewis Navy | | | | Category | Fashion
| | | | Designer | Not Specified | STA Ref | 7590 | | Date Recorded | Not Specified | STWR Ref | none |
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| Tartan Name | Lewis of Wales | | | | Category | Name
| | | | Designer | Daniel, Sheila | STA Ref | 5758 | | Date Recorded | Not Specified | STWR Ref | none |
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| Tartan Name | Lewis Red | | | | Category | Fashion
| | | | Designer | Not Specified | STA Ref | 7570 | | Date Recorded | Not Specified | STWR Ref | none |
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| Tartan Name | Lexington Fire Department | | | | Category | Corporate
| | | | Designer | Polenzani, Maria | STA Ref | 5830 | | Date Recorded | Not Specified | STWR Ref | none |
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| Tartan Name | Liama, The | | | | Category | Fashion
| | | | Designer | Aljean of Vancouver | STA Ref | 5420 | | Date Recorded | Not Specified | STWR Ref | none |
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| Tartan Name | Liberton | | | | Category | Clan/Family | | | | Designer | Liberton, Patrick | STA Ref | 6993 | | Date Recorded | Not Specified | STWR Ref | none |
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| Tartan Name | Liberty Square | | | | Category | Fashion
| Reference | 10621 | | Designer | Liberation Kilt Co | | | | Date Recorded | 18/05/2012 | | |
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| Tartan Name | Liberty University Inc. | | | | Category | Corporate
| Reference | 14352 | | Designer | Paterson, Robert | | | | Date Recorded | 10/07/2024 | | |
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| Tartan Name | Lichen and Stone | | | | Category | Fashion
| Reference | 14024 | | Designer | Bohn, Caryl J | | | | Date Recorded | 29/08/2023 | | |
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| Tartan Name | Lidl | | | | Category | Corporate
| Reference | 12483 | | Designer | Whitson, Fiona | | | | Date Recorded | 30/04/2019 | | |
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| Tartan Name | Lidl Scotland | | | | Category | Corporate
| Reference | 14827 | | Designer | Kinloch Anderson Ltd | | | | Date Recorded | 21/05/2025 | | |
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| Tartan Name | Life Goes on Foundation | | | | Category | Corporate
| | | | Designer | Not Specified | STA Ref | none | | Date Recorded | Not Specified | STWR Ref | 3262 |
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| Tartan Name | Lighthouse, The | | | | Category | Fashion
| Reference | 14221 | | Designer | Nason, Lori | | | | Date Recorded | 20/02/2024 | | |
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| Tartan Name | Lime Rock Park | | | | Category | Corporate
| Reference | 14256 | | Designer | ScotlandShop | | | | Date Recorded | 26/03/2024 | | |
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