My suggestion is 10lb+ monofilament fishing line, simply because braid is banned as a mainline on most of my local waters. I’m currently using 15lb Daiwa Sensor monofilament – It came free with my reels! This is available for about £5 for 300 meters.
The minimum I am allowed on the local specimen lake is 10lb.
I would suggest that you check the local lake websites just in case, but 10lb line would be fine to begin with.
I have made a lot of mistakes during my fishing sessions and don’t want you to make the same mistakes. I’ve learned the hard way over 20 years of fishing most weekends, testing, tweaking, and testing again and now want to help you excel with your carp fishing.
If you need any help, you can reach me at Fishing Again’s Facebook page