How to remove tap

[pauleg]

Hi All,
I'm trying to take the hot tap apart to replace the washer. I've turned off the water but cannot get the tap apart.
Hopefully you can see in the photo below. Online advice says to take the cap off and unscrew the top. There is a groove in the top of the tap but i can't work out if the cap is a separate part or not. I can't get a screw driver or Stanley blade to make any kind of gap.
Is there a better way to take this off, am I being an idiot?



Thanks in advance.

 

[oz-plumber]

They might be 'tamper proof' handles, which require a tool to undo a nut on the underside of the handle.

Hard to explain to someone if they are not familiar with the set-up

 

[drip-dry]

The cap comes off by unscrewing or pulling off...