I cannot recommend this company highly enough! Our plumbers are screened, licensed, certified, and insured—so you'll never have to worry! Chemical drain cleaners can be in solid or liquid form that are readily available through. Co-op energy offers customers up to £ to stick with it – but is it worth it? Great company, honest punctual and knowledgeable prices are fair and workmanship is very professional. At glow-worm we believe there is nothing worse than the shock of a cold shower – not the best.