Re: up to a 20 per cent pay cut overnight... For many, the cost of their current mortgage
Your career was always your own problem.
Look at the (permie) job ads, companies want to hire people who can already do the job. If they can already do the job, how is working for that company a step up?
You either have a Peter principal type winging it (and either sinks or swims ), or it's the same job for better pay because it's closer to London - where all (UK) roads lead.