Best answer by woz
will you have internet access while away?
You are normally asked for meter readings about 15 days after you start the switch, but it doesn’t matter if a few days late.
You could take photos and readings just before you leave, and submit when away if it’s only 2 or 3 days later it will make. very little difference, or if back a few days after the 17th day when switch happens submit then..
Not sending exactly on time won’t stop your switch and you won’t pay for the same energy twice.
Just in process of switching but going on hols next week before process will be finished (I think). Need to get in touch for advice?