During 1191 the citizens of the city of London managed to acquire from Coutances and Prince John the recognition that the city was self-governing, something they had been attempting to secure for a number of years. This however, was not the grant of a complete charter of liberties, which did not occur until 1199. In February 1193 Coutances summoned a council to Oxford, to address problems of administration and defence after the recently received news of Richard's captivity in Germany. The council also took oaths of fealty to Richard. Prince John, however, hearing that Richard was in captivity, immediately went to France and swore homage to King Philip for Richard's lands, and then returned to England and raised a rebellion. Coutances proceeded to besiege Windsor Castle, which was held by Prince John's men. When John heard that Richard was going to be freed, he left England and went to France.