The size of the APK is 16 megabytes (plenty of free space on test devices). There are no relevant entries in the log (unfiltered) and the project compiled fine, the only clues I can find:
1. The 60 second delay after compiling when other bridge and IDE show a disconnect then a reconnect, that was consistent.
2. Reverting the code to a version from yesterday morning allowed everything to function as normal (reverting to a backup of the code was the only change).
3. Other projects deployed to the device fine, at the same time as the issue with this project.
4. The last code change was to delete a section of code that referenced files included in the project, I removed the code and the files, complied and the issue started.
As I mentioned reverting to the backup has stopped the issue occurring, and I have since put back most of the code and no further issues.