It has become critically important to provide a thorough understanding of the effects of the Kangaroo mother care (KMC) phenomenon on infants in the neonatal stage within the United Kingdom (UK). The current body of knowledge suggests numerous research publications globally, but the UK has yet to scale up its KMC practice. This study provides a critical review of the subject for a more nuanced understanding of the subject effect and to identify the current stage of KMC research in the UK. The findings were consistent with the body of knowledge on KMC with slight variations. Specifically, the UK has limited primary study in KMC. Randomized clinical trials (RCT) in KMC are minimal hence the UK is dependent on MedTech like an infant incubator which is a potential threat to KMC scale-up. Breastfeeding figures in the UK suggest depleting practice of KMC. The National and local policies captured KMC components but have impacted morbidity and mortality indices. It also showed three areas of divergence in practice and standardization. To enhance UK national and local policies uniformized guidelines and standardization of postnatal follow-up and community-based supervision are necessary.