I have a 2017 1.6 diesel.

Ever since I bought it when I refuel I have to just pull the trigger and no more, I can lock 1 1/2 fingers under it and watch the fuel slowly trickle in. Any more and the pump clicks off.

Several people have tired, nozzle has been tried all the way in to just the tip, at different angles and pressures, no difference at all.

I have searched and not found any solution with suggestions of.

Fuel filler breather pipe
Fuel tank breather valve

Any resources on how to check these?

There are two valves in the fuel intake.

You can see the top one which moves as you push the fuel nozel into place.

I'm our situation the lower one was stuck so only allowing fuel to trickle past. £120 for garage to listen it up.

It has made a huge difference, 4 minutes to fill tank instead of 15.

So still not working fully but much better.