Thanks Kate, it was only leaking at the swivel, I actually found the tiny screw hole but had to drill it out in the end which creates new problem, but managed to get it apart, I'm remote so won't be calling a plumber

A locating pin

And you should be able to unscrew the wall piece now if you want to replace whole unit

To remove a leaky faucet:

• Turn off the water supply.
• Gather the necessary tools: adjustable wrench, screwdriver, plumber's tape.
• Identify the faucet type.
• Disassemble the faucet by removing handles and fasteners.
• Inspect and replace faulty parts (e.g., washers, O-rings, cartridges).
• Reassemble the faucet in reverse order.
• Turn on the water supply and check for leaks.

Note: If unsure, consult a professional plumber and always use high-quality kitchen faucets to stay trouble-free.