When I've had to work a notice period it has been a month (in the UK). I focussed as much as I could on handing stuff over, going into "question and answer" mo

When I've had to work a notice period it has been a month (in the UK). I focussed as much as I could on handing stuff over, going into "question and answer" mode, and generally refused to go into meetings for new projects, excluding myself from discussions on the basis that it was better for everyone if I did not. I did some genuinely new work in one case to help a colleague I liked get started.