The UK has a diverse and substantial portfolio of particle physics research and outreach activities. UK physicists collaborate and conduct research in projects all over the world and within the UK. These activities include the ATLAS, CMS, LHCb, and ALICE experiments at the Large Hadron Collider, experiments studying the nature of the neutrino such as DUNE, T2K/HyperK, MicroBooNE, SoLiD and SNO+, experiments dedicated to the search for dark matter such as LZ, DarkSide, ADMX and AION, experiments at the intensity frontier such as Mu2e, g-2, Mu3e, and NA62, and robust initiatives in accelerator development, future detector instrumentation, and theoretical research. The UK boasts a vibrant culture of public engagement embedded in individual institutions and spanning experimental research programmes. This includes a national programme of schools masterclasses, and multiple initiatives making use of scientific data from experiments in educational and outreach activities. UK physicists and public engagement professionals regularly organise and contribute to public events at the institutional and national level, and develop online resources, smartphone applications, posters/booklets, and contribute to teacher training and to publications on educational and public engagement pedagogy. The UK hosts successful public engagement collaborations with artists across a range of visual and performing arts. A particular focus of the UK public engagement strategy is in reaching audiences with low science capital or in geographically remote areas. Examples include leadership of the Physics Without Frontiers programme and the development of an award-winning innovative programme to enable visually impaired audiences to engage with particle and accelerator physics.