Full context I was made redundant about 6 weeks ago. I started to interview as soon as it happened. Long story short, in the end I got an offer and one of the process is still ongoing. I'm due to start soon the offer I accepted , and it would (likely) clash with the unexpected on site final interview at the other place.
The companies are quite different and one is much bigger than the other and also considerable more £££.
I'm going to ask the company I'm still interviewing at to put their skates on but I'm unsure if telling them I'm starting a new job or tell them I'm going on holiday.
There's also the option of simply withdrawing