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- Kings Rd
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- Livale Road
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- Llandennis Road
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- Llandough Institute
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- Llaneirwg Way
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- Llanfabon Drive Spar
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- Llangattock Road
- Llangorse Rd
- Llangranog Road
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- Llanharry Road
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- Llanhilleth
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- Llanhilleth Hotel
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- Llanrumney Avenue
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- Llanrumney Hall
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- Llansoar Farm
- Llantarnam Grange
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- Llantrisant Leisure Centre
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- Llantrisant Rise
- Llantrisant Road
- Llantrisant Road (1)
- Llantwit Major
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- Llantwit Major Road (1)
- Llanwern High School
- Llanwern Road
- Llanwonno Road
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- Llanyrafon Methodist Church
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- Llanyrafon Mill
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- Llanyravon Square
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- Llanyravon Way
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- Llechau Farm
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- Llewellyn Avenue
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- Lloyd George Avenue
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- Lloyds Bank
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- Lloyds TSB
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- Llwyn Hir
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- Llwyncrwn Road
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- Llwynderi Road
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- Llys Enfys
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- Llys Gwynno
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- Load of Hay Road
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- Locking Farm Industrial Estate
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- Locking Head Drove
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- Lodden Close
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- Lodge
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- Lon Helygen
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- Lon-y-Rhyd
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- Longcross Street
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- Lonsdale Road
- Lothian Cres
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- Lower Churchill Way HG
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- Lower Machen
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- Lower Merthyr Dyfan
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- Lower Norton Lane
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- Lower St Mary Street NB
- Lowlands Road
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- Lowther Road
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- Loxton Campus
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- Loxton Road Shops
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- Lyceum Tavern
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- Lyndhurst Avenue
- Lynton Terrace
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- Lysaght Institute
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- Lysaght Way
- M&S Ty Glas Avenue
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- Machen Primary School
- Machen Surgery
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- Mackintosh Road
- Maelfa
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- Maen Gilfach
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- Maendy
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- Maenllwyd Inn
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- Maerdy Park
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- Maes Gwyn
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- Maes y Siglen
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- Maes-y-Coed Road
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- Maes-y-Ffynon
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- Magdalen Way
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- Magretion Place
- Maidstone Grove
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- Main Car Park
- Maindee Library
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- Maindee Primary School
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- Maindee Square
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- Maindy Stadium
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- Mallard Walk
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- Malpas Court Primary School
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- Malthouse Avenue
- Mamgu Statue
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- Manor Parc
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- Manor Park
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- Manor Rise
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- Manor Road
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- Manor Way
- Manor Way Bottom
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- Manor Way Middle
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- Manor Way Top
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- Manorbier Cres
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- Mansell Avenue
- Maple Avenue
- Maple Drive
- Maple Road
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- Maple Terrace
- Mardy Road
- Margaret Street
- Margaret Street (1)
- Marie Curie Hospital
- Marine Hotel
- Marine Lake
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- Marine Parade
- Mariners Court
- Mariners Green
- Marion Jones Court
- Maritime Court
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- Market Square 15A