Flotsam & Jetsam
If the UK workforce is becoming a nation of drifters. It is partly the responsibility of the corporate world and partly the 21st Century aspirations of the employees.
Companies don't generally employ their staff with a view that they will be there for 40 odd years or so. This probably is down to the fact that junior and middle Management is also part of the drifting society. This attitude then pervades to all levels. The only level of security that one seems to have is at the senior Executive level, with golden handcuffs and hello's.
As individuals, we are constantly sold on the idea of more leisure time, work life balance etc. And people now show the same level of loyalty as they feel they receive from the employers. If you then through into the mix, the structure and cost of out modern society then it's no wonder that people need to move from job to job - they are always chasing that little extra bit of salary.
To answer your straw poll - in my experience, generally front line are FT employees rather than temps.