India's first major tariff dispute under the India-UK trade pact has left dozens of bulk Scotch shipments stranded at ports, with customs authorities demanding 150% duty instead of the agreed 75%.. India's trade pact with the UK faces its first major dispute as customs officials seek a 150% tariff on bulk Scotch imports by Pernod Ricard and Diageo, despite assurances of a reduced 75% duty.