Mr Muscle Drain Unblocker, Sink & Drain Cleaner, Fast Acting Heavy Duty Drain Gel, Dissolves Clogs, Works 3x Better Than Bleach, Safe for All Pipes, 1L : Amazon.co.uk: Health & Personal Care
Draper 85630 Drain Unblocker, 7.6M each | Power Tools Direct
Best Kitchen Drain Unblockers: Buster, Mr. Muscle, Domestos and more - Which?