If concealed fixed pin hinges.
Removing upvc door from hinges.
Best of all it only requires a hammer and a small screwdriver.
Open the door to 90 degrees from the frame and lift the door upwards.
For the sake of stability take off the bottom hinge first followed by the top.
Don t worry removing a door from its hinges is an easy task that can be done in under a minute.
If stiff you might want to use a crow bar to lever from underside of the door.
Unclip the plastic covering the flat section and you should find 2 or 3 bolts to remove the hinge you somtimes have to loosten the bolts to adjust the hinge with the allen hex key lightly wedge the door in the centre underneath before loostening the hinges.
So the only way to get a door open when you re on the outside and it s locked from the inside is to remove the door from its hinges.
There will be covers fitted over the hinges which can be removed either by sliding the cover off exposing screws holding the hinge to the face of the door or the hinge covers could be screwed on in which case there will be little screws to the outside edge of the hinge facing the ingle once you have the hinge.