Top Gear co-host Jeremy Clarkson is in trouble again after an allegedly racist remark during the BBC show's Burma-based series finale.

Indian-born actress Somi Guha, who lives in London, has instructed lawyers to take action after Clarkson used the word "slope", a derogatory term for people of Asian descent, Mail Online reported.

The offending word was used after Clarkson and the show's other two hosts, Richard Hammond and James May, built a bridge over the River Kwai in Thailand. The programme, the last in the latest series, has already aired on Foxtel*.

After the bridge was finished, Clarkson said, "that's a proud moment, but there's a slope on it", as a man walked across the structure.