A British oil worker and his two-and-a-half-year old son were kidnapped Sunday in Nigeria, a few days after a another British oil worker was taken hostage. Martin Westbury, and his son, were seized by three armed youths in Warri in south-east Nigeria, an official working for Westbury’s employer, the Anglo-Dutch oil giant Shell. The official said the two were abducted as they cycled at a jetty in Warri. Another British oil worker, Jim Simpson, was seized last week and negotiations are under way for his release.