LONDON - A British insurance firm yesterday offered "Virgin Birth By Act Of God" insurance. Following the successful launch of its alien impregnation insurance policy to 300 women in just one week, a city insurance broker, Goodfellow Rebecca Ingrams Pearson (GRIP), offered the new policy. Virgins pay £2 a week and will be offered £1 million if impregnated by "Act of God", it said. "Virgins are genuinely concerned with the approach of the second millennium," a GRIP spokesman said.