Should be quite easy. You will need to remove the swivel spout. Most have a small grub screw to remove, just under the swivel joint (some on front, some on rear). Other spouts haven't got a screw. With these you need to turn the spout 180 degrees from normal position ie. so that spout is pointing backwards then give the spout a good yank upwards.
When the spout is removed, you will need to buy a new rubber O ring to replace the worn one inside the leaking joint.
Can I just add, it is most common for spouts to be facing 90 degrees clockwise from the normal position, lining it up with the hot side, then it should pull up easily.
If you need to find a tradesperson to get your job done, please try our local search below,
or if you are doing it yourself you can find suppliers local to you.
Select the supplier or trade you require, enter your location to begin your search.
Please select a service and enter a location to continue...
Are you a trade or supplier? You can create your listing free at DIYnot Local