α-decay spectroscopy of 182,184 Tl has been performed at the CERN isotope separator on-line (ISOLDE) facility. New fine-structure α decays have been observed for both isotopes. α-decay branching ratios of 0.089(19)%, 0.047 (6)% and 1.22(30)% have been deduced for the (10 − ), (7 + ) and (2 − ) states respectively in 184 Tl and a lower limit of 0.49% for the α-decay branching ratio of 182 Tl. A new half-life of 9.5(2) s for the (2 − ) state in 184 Tl and 1.9(1) s for the low-spin state in 182 Tl has been deduced. Using α-γ coincidence analysis, multiple γ rays were observed de-exciting levels in 178,180 Au fed by 182,184 Tl α decays. The γ transitions connecting these low-lying states in 178,180 Au are essential to sort the data and possibly identify bands from inbeam studies in these isotopes. Owing to the complex fine-structure α decays and limited knowledge about the structure of the daughter nuclei, only partial