Need urgent drainage unclogging in kitchen sink

I'm seeking a reliable tradesperson to unclog a stubborn kitchen sink drain in my Irlande home. The blockage causes slow drainage and occasional gurgling noises, even after using a plunger. I prefer a practical, no-damage solution and would like a quick assessment to determine if the issue is in the trap or further down the line. Please bring appropriate tools (plunger, plumber’s snake, and basic camera if available) and provide an upfront estimate. I value punctuality, respect for the space, and leaving everything back in good order after the job. If extra parts are needed, I’d appreciate a brief explanation of options and costs before proceeding.