The string "Last.Night.in.Soho.2021.1080p.WEBRip.x264" indicates a high-definition, 1920x1080 resolution, H.264 encoded video file captured from a streaming source. Subtitles for this specific, widely compatible release can typically be sourced in .SRT format from community databases such as Subscene or OpenSubtitles. You can search these repositories for matching subtitle files.