Meanwhile he had been appointed physician advising on the establishment of a silk factory.
He tried to compel the Dutch and French refugees in England to unite with the Church of England, advising double taxation and other forms of persecution.
From Leiden he wrote (9 June 1585) to Lord Burghley advising the assumption of the protectorate of the Low Countries by Elizabeth.
Voluinsky, however, now thought himself strong enough to attempt to supersede Biren himself, and openly opposed the favourite in the Council of State in the debates as to the indemnity due to Poland for the violations of her territory during the war of the Polish Succession, Biren advising that a liberal indemnity should be given, whereas Voluinsky objected to any indemnity at all.
After some years of wandering he gave up his more energetic propaganda, contenting himself with advising those who sought him out.