This volume has journeyed through the multifaceted psychological landscapes of those who have migrated to the United Kingdom from various countries, revealing the complex interplay between individual agency, historical legacies, and structural forces that shape migrant identities and experiences. Rooted in postcolonial frameworks and an array of psychological perspectives, these chapters have collectively challenged reductive narratives of migration as mere economic or cultural transitions, highlighting instead how migration is deeply embedded in the continuing effects of Empire, racialisation, and social stratification. The stories and analyses presented here span diverse migrant groups, from highly skilled Hong Kong immigrants who articulate favourable relationships with British colonial legacies, to African migrants whose movements unsettle the very foundations of imperial history; from Polish migrants negotiating whiteness and belonging in a Brexit-shaped Britain, to South Asian communities wrestling with colonial legacies such as caste classification, the intergenerational transmission of trauma, and the persistent aftershocks of Partition. Each chapter offers a distinct yet interconnected perspective on how identity is actively formed, contested, and reshaped amidst acculturation, racialised social hierarchies, and evolving diasporic formations in a postcolonial Britain.