Front brake discs replaced - but why are the brake lights on?

Have you tried pulling up on the pedal to check if it is sitting low ?

Yes, that was actually going to be my next check. But first I’m replacing the rear discs. Hopefully the rear calipers are both serviceable.

Pay attention to the handbrake leaver chamber. The eccentric rides in a needle roller bearing which can deteriorate alarmingly if road dirt / salt water get in & it will have, to some degree. I have washed most of this assembly out when spraying release oil in, squirt in at "9 o'clock" rollers & cage (in the form if rust dust) out at 3!
Ideally the callipers should be inspected on the bench, I guess you wouldn't want to take them off but do take the leaver off, pop off the rubber seal & have a squint at what's in there. The whole unit can be stripped & all component parts are available, including the bearing (French in Burnley keep those), the biggest problem is the circlips, you need a long prong pair of circlip pliers. I'll attach a picture of these later.
M

Well now here’s the thing.
With the words of wisdom relating to servicing the caliper (and personal experience with Ford items) i purchased a pair of aftermarket items from a well known source.
I spent 3 to 4 hours this AM trying to get the new pads to slide into their respective positions. Eventually I picked up the measuring stick (otherwise referred to as digital calipers) and established that the new aftermarket item was 1/2 mm narrower than the OEM item.
Phoned the vendor whose response was not what I think it should be. The message was trim the pads to fit.

I tried both new and old pads in the old calipers and both pads (new and old) fitted in that old calipers. In my mind the new is not acceptable.

There is a theme here new stuff is substandard.

“Airpotable”, Can you please offer some contact details for “French in Burnley” or bearing description so that I might investigate overhauling the items Im taking off ?
I have google searched French in Burnley with nothing sensible coming back.

It's Frenchtech that supply brake parts. 
They have a good store on Ebay. 

Just send them back to the supplier as they don't fit. The response/reply you received was/is unacceptable, there are rules under the sale of goods act, check them out. Good luck.

Thank you for filling out friend in with this information. I have just written a piece specifically for Delbourt on this, which included pictures, hints etc, as I have done on a number of other topics on recent occasions & found them disappear due to Bot certification.
I won’t be contributing again until we are released from this routine.
So this is a tentative “Thanks for all the fish”
Mike.

In the interim, I would recommend posting your message in stages. Post an initial outline then edit the post with more info, post and repeat. At worst you would only lose one edit. 
Not perfect I know, but we can't let the b******s win!

I highlight and copy any of my posts that are anything other than a couple of lines before sending so they can be immediately re pasted and re posted.
Its an easy way to ensure a long post cannot be lost and that time wasted
Or type the post into a Word document first so the completed text can be very quickly pasted in and photos added..
Its a pain but not difficult to work around.

Yes of course there are work arounds. I no longer notate current car related jobs, I comment to help others across as wide a front as my knowledge allows.
I look at TBar at lunch time & in the evening, I may then comment, adding picture, if available & all this on my phone from my chair in the sitting room.
This mode of operations is how it works for me & has done for in excess of ten years. It has been a pleasure to help, I have also been enormously grateful for help received. The interdiction of this Bot Spotter, although understandable, has created an irritant that has stood between me & those I wish to help; not on the odd occasion but recently on a regular basis. My workshop has rarely been busier, time spent circumventing this is time not being focused on other rewarding jobs.
The ‘bar will function quite well without my contribution & once free from these fetters I will resume my contributions. Assuming other members feel that there may be value in that.
M

To be clear. Unfortunately I had painted these items so in that respect they are not as received. So I am reluctant to enter into the hassle of negotiation. 
I will write to the vendor with my thoughts. The suggestion as to how to overcome the issue (i.e. file the edges) was not impossible or impractical. But for a safety item such as brakes I found it a little strange. The solution might be substitute used OEM carriers.
Thankfully the items (not the component with the piston in but the part that carries the pads in the shims - the carrier) that I have just removed are still very much serviceable and have been painted in readiness.

I’ll not name the vendor until at least they have had opportunity to respond after I write to them. Until now I have been pleased with what they have sold me.