Brent crude traded above $96 a barrel and reached reported intraday levels of up to $97.58 after a 9.3% weekly gain, as escalating US-Iran hostilities and threats to Gulf energy infrastructure raised concerns about prolonged Strait of Hormuz disruption. London’s FTSE 100 fell 0.1% to 10,824.74 points by 0927 GMT, with BP and Shell each gaining about 1% and limiting declines as stronger US jobs data lifted expectations of a Federal Reserve rate increase. Iranian Parliament Speaker Mohammad Bagher Ghalibaf warned that Tehran could retaliate against regional energy infrastructure and US oil and gas interests if Iranian energy assets were attacked, saying, "Either all or none."