Allan's song “On the Inside” (the theme for the t.v soapie “Prisoner”) recorded by Lynne Hamilton, reached No.1 in Australia and New Zealand, No.3 in England and made the Country Charts in the USA (his own version was a top 20 country hit in Europe in 2004). At last count, Caswell has had well over 900 songs published and over 500 recordings of his songs released worldwide by the likes of Cilla Black, The Irish Rovers, Patti Page, Slim Dusty, James Blundell and The Living End. At the height of The America’s Cup hysteria when "Australia 2" was in trouble, Caswell wrote and released “The Australia’s Cup”. The record, recorded for $38 and released independently, went to No.1 in Sydney and top 5 nationally in 1983. Here to download is that single "The Australia's Cup" b/w "Lonelyhearts Waltz" (13515). Caswell penned both sides of the single.