SY postcode area
These cover most of Shropshire ( including Shrewsbury , Oswestry , Ludlow , Bucknell , Whitchurch , Bishop's Castle , Craven Arms , Church Stretton , Ellesmere , Lydbury North and Llanymynech ) , north Powys ( including Montgomery , Newtown , Welshpool , Caersws , Llanbrynmair , Llanfechain , Llanfyllin , Llandinam , Llanidloes , Llansantffraid , Machynlleth and Meifod ) , and north Ceredigion ( including Aberystwyth , Borth , Bow Street , Tregaron , Talybont , Ystrad Meurig , Llanrhystud and Llanon ) , plus small parts of south Cheshire ( including Malpas ) and north Herefordshire , and very small parts of Gwynedd and Wrexham County Borough . 
<triplet> Montgomery <subj> Powys <obj> located in the administrative territorial entity <triplet> Newtown <subj> Powys <obj> located in the administrative territorial entity <triplet> Welshpool <subj> Powys <obj> located in the administrative territorial entity <triplet> Caersws <subj> Powys <obj> located in the administrative territorial entity <triplet> Llanbrynmair <subj> Powys <obj> located in the administrative territorial entity <triplet> Llanfechain <subj> Powys <obj> located in the administrative territorial entity <triplet> Llanfyllin <subj> Powys <obj> located in the administrative territorial entity <triplet> Llandinam <subj> Powys <obj> located in the administrative territorial entity <triplet> Llanidloes <subj> Powys <obj> located in the administrative territorial entity <triplet> Machynlleth <subj> Powys <obj> located in the administrative territorial entity <triplet> Meifod <subj> Powys <obj> located in the administrative territorial entity <triplet> Aberystwyth <subj> Ceredigion <obj> located in the administrative territorial entity <triplet> Borth <subj> Ceredigion <obj> located in the administrative territorial entity <triplet> Bow Street <subj> Ceredigion <obj> located in the administrative territorial entity <triplet> Tregaron <subj> Ceredigion <obj> located in the administrative territorial entity <triplet> Talybont <subj> Ceredigion <obj> located in the administrative territorial entity <triplet> Ystrad Meurig <subj> Ceredigion <obj> located in the administrative territorial entity <triplet> Llanon <subj> Ceredigion <obj> located in the administrative territorial entity