When you visit the UK? That's how I interpret the OP.
They could possibly keep the device to study it and create tools by the time the next guy with the same software comes along. Or simply confiscate and pressure you to give access. A lot of people simply crack.
So they just come home with a warrant and take your unencrypted hard drive that's self hosting all that apps
You think its unencrypted? Hah, nice try.
When you visit the UK? That's how I interpret the OP.
They could possibly keep the device to study it and create tools by the time the next guy with the same software comes along. Or simply confiscate and pressure you to give access. A lot of people simply crack.