Particularly in financial services, because that's kind of where I am!
I have been with the same company for 10 years. It's not strictly public sector, but we are funded by taxes and honestly it may as well be for the limits that are placed upon us, e.g. public sector pay freezes. We deal with money but are not a regulated entity. I have held 5 different positions in that time and have doubled my salary from my pitiful intern role when I started, but I know if I got a job at a bank etc it could double again.
I've made several attempts over the past 14 years of my working life to leave my public sector -ish job and move to the private sector. I've obviously been unsuccessful and I feel like the more time passes the worse it's getting. I stopped looking for jobs during lockdown because I appreciated the security in a chaotic world and then I had a baby and I'm currently pregnant with my second, so I'm trying to come up with a plan for when I return from maternity leave because I really need to get a grip on my future as my current job is a ticking time bomb. I'm on c.£45k, which isn't great for London.
My dream is to triple my salary so that my partner could either work part time or be a SAHD because he's brilliant with our DC and is very stressed at his NHS job.
So far I have matched up with a mentor who is supposed to help me come up with a plan but I'd really love to hear from people who managed to move into the private sector successfully and are willing to share any tips etc!