Kitchen mixer tap - how to expose headgear nut?

[Kubla Khan]

Hi everyone.
Hoping someone might be able to help me out with a quick query.

I've got a dripping kitchen mixer tap - which drips only when the hot water is switched on.

I'm presuming it just needs a new washer, but I'm unable to access the headgear nut. I've removed the cap from the tap, but I'm then presented with what's in the pictures below. The tap itself feels like it is still fixed on with a (loose-ish) screw.

Can anyone help me out with advice on how to remove this tap? Thanks in advance.

 

[Chalked]

Looks like a bit of brute force needed. It will come off .

 

[Kubla Khan]

You think just lever it off?

 

[Chalked]

Yup!

 

[Kubla Khan]

Will give it a crack in the morning

 

[Kubla Khan]

Sorted. Didn't feel like it was going to shift, but then it did. Cheers!