I think you’re chasing your tail with the second brake light switch
My “best” remote assessment would be (with the lack of fault codes) would be either fuel pressure or a spark plug/HT issue. The Ford coil packs aren’t the most robust of beasties
But I’m hypothesising without being able to throw some test equipment on the car
Simon @ SiFab.co.uk
Sifabtemporary @gmail.com