Environmental crisis has become a lived condition that reshapes cultural imagination, ethical reasoning, and everyday language about the more-than-human world. Despite the rapid growth of ecocriticism, contemporary British drama remains comparatively underexamined, since existing work often prioritizes novels and climate fiction or focuses narrowly on theatrical performativity and environmental symbolism rather than the textual construction of eco-consciousness across multiple plays. To address this gap, this qualitative descriptive study investigates how eco-consciousness and human nature relations are articulated in three contemporary British plays, Colder Than Here by Laura Wade, Greenland by Moira Buffini et al., and Earthquakes in London by Mike Bartlett, focusing on how dramatic texts construct eco-consciousness and human–nature relations. Methodologically, the research employs qualitative close reading and systematic coding of dialogues, monologues, stage directions, and setting descriptions, guided primarily by Garrard’s ecocritical concepts and informed by Buell’s environmental criticism. The findings reveal convergent patterns across the corpus: anthropocentric ideology is normalized through everyday language that frames nature as a resource for development; ecological awareness and environmental ethics surface through characters’ moral reasoning, grief, and responsibility narratives; and human–nature interconnectedness is dramatized as an affective and social condition in which ecological loss disrupts relationships, well-being, and imagined futures. By combining comparison with close textual evidence, the study offers an original contribution to ecocriticism and contemporary drama studies, demonstrating how British theatre provides a distinctive cultural arena for articulating ecological anxiety, ethical deliberation, and sustainability discourse within the wider environmental humanities.