Louise Devlin

Hi everyone, My boyfriend is an Australian Citizen, and currently in Australia. I am A UK citizen in the UK, and we are obviously separated due to border closures. My partner plans to move long term to the Uk, and is in the process of looking for jobs, which is tricky considering he can't be in the UK right now. We have not tried for an exemption yet, but has anyone got any knowledge of a visa route, evidence we would need to show he was just booking a one way ticket out, with no expectation to return during border closure? There seems to be no info on this and we really need some guidance. Louise