To compare client response to a 3-stage phased intervention for complex trauma, comparing (1) those who received face-to-face intervention with (2) those who received a hybrid of face-to-face moving mid-therapy to online intervention with (3) those who received online only. Comparing quantitative and qualitative outcome data from 3 consecutive groups (N=22) who participated in a 3-stage phased intervention for complex trauma (1) face-to-face intervention (n=7); (2) a mix of face-to-face and online intervention (n=6); (3) online only (n=9). Analysis of quantitative data indicated a reduction in trauma symptoms across all modes of delivery. Reliable change indices suggested that face-to-face intervention facilitated the greatest change. In response to questions, participants spoke about (1) having a positive experience of the intervention, (2) advice to future group members, (3) constructive feedback, and (4) the experience of engaging online. Responses indicated that the experience of all groups were broadly similar. Participants reported strong group connections and an increased understanding of trauma. Minor differences, specific to the practicalities of each group, were found in the constructive feedback offered. Comments regarding the online experience highlighted the accessibility of the modality and indicated a sense of diminished group cohesion. Overall, participants reported a preference for face-to-face engagement. The majority of participants benefitted from the intervention regardless of modality. However, there is tentative evidence that the online format was the delivery mode associated with poorer-performing clients. In the future, online engagement and client preference should be considered carefully.