UK Barrels
A UK barrel is 36 imperial gallons (not to be confused with American gallons), about 163.659 liters or 0.163659 cubic meters. It is based on the traditional wine barrel used in the United Kingdom.
Tablespoons
There is more than one type of tablspoon:
One US tablespoon is equivalent to approximately 14.8ml: US tablespoon
One UK tablespoon is equivalent to approximately 15ml: UK tablespoon