One Shot Drain CleanerPLEASE NOTE: The sale of this product is restricted by law. From 1 10 23, new government legislation will require all purchasers to provide Photo identification, Statement of the nature of the business and business VAT registration number. One Shot Drain Cleaner Instantly unblocks drain in just one shot! One Shot is the original and best drain cleaner available in the UK. One Shot has been sold throughout the UK for over 33 years. Tried, tested and