Summary An urgent care centre (UCC) is an upcoming trend in Swedish health care. Although UCCs have been established in other countries, their effectiveness and value have not yet been studied in Sweden. The aim of this study was to investigate the interaction between the UCC and emergency department (ED) by using validated evaluation models. One adult ED (AED) and one child ED (CED), together with a newly established UCC nearby, were included in this study. The interaction between the UCC team and the ED teams was studied by using two evaluation models: one for evaluation of integration and the other one for the evaluation of the effects, in terms of perceived relief of the ED after the establishment of the UCC. It was evident that integration was achieved early on in the course of the follow‐up. However, the perception of integration varied between low (EDs) and high collaboration (UCC). All respondents of the EDs indicated relief, in terms of pace and pressure on the ED since the UCC was established. This study indicates that the grade of integration and collaboration between UCC and ED can be achieved automatically and very early during the establishment. It also shows that UCCs can be a competent complement to EDs and alleviate some of the heavy pressure placed on EDs due to ED overcrowding.