Mumbai, Dec. 13 -- Tata Motors Ltd and Motherson Sumi Systems Ltd are two Indian company stocks most impacted by the noise around United Kingdom's (UK) Brexit deal. Therefore, the rally in both these stocks on the back of Boris Johnson's landslide victory is not surprising as it brings certainty to sealing the Brexit deal.

However, it would be prudent for investors not to put the cart before the horse. Analysis by CNN International highlighted, "after the Brexit deal is passed and ratified in January, the UK moves into an even more expansive and complicated negotiation period, setting out just how closely aligned it will stay to the EU on issues like the environment, competition, workers' rights and trade."

The actual impact would be kn...