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+44-8435-(000000...009999): Special Services basic rate: up to and including 5p for BT customers (non-internet) Read more about +44-8435-(000000...009999)
+44-8435-(010000...019999): Special Services basic rate: up to and including 5p for BT customers (non-internet) Read more about +44-8435-(010000...019999)
+44-8435-(020000...029999): Special Services basic rate: up to and including 5p for BT customers (non-internet) Read more about +44-8435-(020000...029999)