Is the UK law broadly against encrypted files? For example if I encrypt a file locally, a zip file containing images, am I not permitted to upload that zip fil

Is the UK law broadly against encrypted files? For example if I encrypt a file locally, a zip file containing images, am I not permitted to upload that zip file to a cloud service in the UK? Even if the UK's demands were "access to encrypted cloud services", does that also mean encrypted files within encrypted storage? It all seems so messy. Anyone who really wants to hide their files, can do so regardless of demands for backdoors.