The Cleopatra Entertainment website has added details for the US theatrical release of Modern Life Is Rubbish, with a list of dates and locations. Still no trailer on there, despite the release on 27th April 2018, in just 4 weeks. Director Dan Gill posted on Instagram about a UK release of 4th May 2018, but not sure how wide that release will be, with the UK DVD release on 7th May.
A strange trailer for the film has been uploaded to vimeo by Zoom.co.uk. Strange as in it has Dutch subtitles. There is a brief glimpse of Tom Riley from behind, but that's it.