Wiper Blades
Front   Rear

Front:

The replacement indicator on the outer ends:

This way up:

Rear:

My rear blade pulled out to the 'replacement' position:

The nut cover moved while I was doing this but it doesn't need to be, just pull the arm away from the glass firmly until it clicks into position.

The pegs on the blade just pull out of and push into cut-outs underneath the arm, nothing to squeeze together:

Blade fits either way round.

Nut cover in the normal position:

Slid to the left prior to lifting up, make sure the tab on the cover fits into the slot in the arm (arrowed) as you fold it back: