Comment by 9JollyOtter

> In the UK, there is no crime "burglary".

Yes there is:

https://www.legislation.gov.uk/ukpga/1968/60/section/9

https://www.college.police.uk/guidance/residential-burglary/...

> "Breaking and entering" it's a criminal offence, and walking through an unlocked front door back door doesn't count.

No breaking and entering is known as burglary. Also if you walk through the front door with the intent to commit a crime it is still burglary. The important part is trespassing with the intent to commit a crime.