Knackered master cylinder seals.
As he says, if you're not losing fluid & you've bled it properly then master cylinder seals.
It's hugely unlikely for the master cylinder seals to just become knackered on the day you've been doing the hoses, and the usual problem with master cylinder seals is that the system bleeds ok, then the pedal slowly sinks as the seals allow fluid back to the reservoir.
What was the pedal like before you started the work?
Travelled approx 75 - 100mm brakes fully on. But as I had replaced the front brake pads at the same time as the hoses, I assumed that the pedal would be a little less before fully on. This is the case, less pedal travel but only with the engine off.
When you press the brake and it goes nearly to the floor, does it improve if you take your foot off the brake and re-apply it?
Yes, but only with the engine off, if the engine is on then pedal travel is roughly the same.
Have you checked the brakes are working on each wheel by jacking up, spinning the wheels and pressing the brake?
Yes, all four wheels checked separately and brakes working well on all four corners.
Have you clamped off the hoses one at a time in order to find which one improves the situation, and therefore where the problem lies?
No, but this I shall try today or this evening.
Have you had the rear drums off, and are the self-adjusters working?
Yes, self adjusters working ok on both rear brakes.
Steve
I shall try the clamping individually of the pipes and see if I can find where the problem might be. I have more cars than I care to remember over the past 20 years, but this one has me scratching my head.
Like you used to get the 4.50pm Marina, perhaps this is 3.20 Peugeot, well they do finish earlier on the continent, don't they......