Acquaviva had instructed that should anything happen to Weston, Garnet was to succeed him as superior in England, which he did when only days after leaving Harlesford, Weston was captured "en route" to London. Acquaviva had also given Garnet permission to print pro-Catholic literature, and so early the next year he met Southwell in London to discuss the establishment of a secret press, which was probably located somewhere around a former Augustinian hospital near Spitalfields. It lasted until late 1588 and was responsible for "A Consolatory Letter to All the Afflicted Catholikes in England", author unknown, and "An Epistle of Comfort", by Southwell. From a friend's window in Ludgate Hill, Garnet witnessed the November 1588 procession to a thanksgiving service at Old St Paul's Cathedral, celebrating the failed Spanish invasion. Spain's actions gave Garnet much cause for concern, "For when we thought that there was an end to these disasters by which we are already nearly destroyed, our hope was suddenly turned to sorrow, and now with redoubled effort the overseers are pressing upon us". People were allowed to spectate from windows only if their loyalty to Queen Elizabeth I was guaranteed by the householder. In a letter to Acquaviva, Garnet said that many of his supporters thought that he was more concerned for the Queen than her Calvinist ministers. In light of the Armada's destruction, he also wrote to the general to ask for advice on two versions of a proposed oath to allow Roman Catholics to swear their allegiance to the Queen. The government's version required that Catholics reject the pope's authority over Elizabeth, whereas the Catholic version proposed that they recognise her authority and "would wish with every effort to struggle to thwart and to fight to the death all those who will in any way endanger the life of her Highness". The Privy Council rejected the latter.