Can I bring my non-UK or non-EU spouse/partner?

Yes, but only if your relationship existed before the end of the transition periodTransition Period The transition period (also referred to as the implementation period) is the period following the UK's departure from the European Union (on 31.01.2020) until the end of 2020. An option to extend this period has not been taken up by the UK government.. Otherwise they will have to apply as a third country national3rd country nationals Third country nationals are citizens of non-EU/EEA countries. Residency and naturalisation procedures for third country nationals are more complicated than for citizens of EU Member States or EEA signatory states. (3CN3rd country nationals Third country nationals are citizens of non-EU/EEA countries. Residency and naturalisation procedures for third country nationals are more complicated than for citizens of EU Member States or EEA signatory states.).