Recently the online TM30 system has changed. It now has an ability to “export” (why they didn’t use the word “print” is beyond my levels of reasoning) a PDF document that you can print to use at your local immigration office as needed.
You enter the person staying details as per the required fields (marked with a red asterisk) and submit.
You then search for the inputted information (as long as it’s within 7 days of entry) and next to the persons name is a magnifying glass icon. Click on that and a full screen pops up with their entry details. At the bottom is a button labelled “export” (WTF not use the word print?). Press that and a PDF popup appears allowing you to print the information.
For now most offices will accept a printed screenshot of the inputted information. Now that a print out is available that may change in the future.