An adaptor (2) for fitting a fluorescent tube (80) to a fluorescent tube housing. The adaptor includes a body portion (6) for attachment to an end of the fluorescent tube (80), a pair of contact and arm assemblies and a lid portion (8). Each contact (10, 12) in the pair of assemblies is electrically connectable to a power source. Each arm (14, 16) in the pair of assemblies is adapted for electrical connection to a respective contact (76, 78) of the fluorescent tube (80) so as to provide power from the power source to a fluorescent tube (80).