Bless me a sinner, Venerable Father Silouan!
I've studied the Recusant period and the great religious literature it produced.
I have yet to ever come across any hint of there being any Eastern Churches in Britain and Ireland at that time that had its martyrs, however.
King Charles I, who was himself beheaded and acclaimed a martyr by Anglicans, had excellent relations with the Greek Orthodox Church and he received a Greek Bible from Patriarch Cyril Lucaris, who, as we know, was attacked as a Protestantizer by the Jesuits, having been portrayed as such by the Puritans and other Protestants of the day.
The Protestant articles of faith ascribed to him were condemned by the Orthodox Church, but the Orthodox jury is still out on whether he can be legitimately claimed as their author and if he himself was a Protestant (nonsense I say!).
Throughout this period as well Thomas Ken, Nicholar Ferrar, William Law, William of Canterbury and other Anglican divines were well acquainted with Eastern theological and liturgical works.
It was these works of the Christian East at the time of the undivided Church that led Anglicans to maintain their "High Church" heritage against Protestantism. William Laud and Charles were beheaded for this. Nicholas Ferrar's LIttle Gidding community was rampaged and destroyed by the Puritans following his death.
And,of course, the Catholics also burned Protestants for their faith, up to about 300 at one point. I remember visiting the town of Lewes where 17 Protestants were burned by "Bloody Mary" daughter of King Henry VIII . . .
260 Irish Martyrs of this period have their cause pending at Rome. The Scots, being the most civilized

, only had one Catholic Martyr, Bl. George Douglas and some say this was done in error - yeah, right!
The Anglicans now have a commemoration of all Catholic and Protestant Martyrs of the Reformation Era that they hold on October 31st which is the day on which Martin Luther nailed his 95 Theses up for everyone to see and thus began the Reformation.
Tyburn Convent in London stands near the spot where about 100 Catholic martyrs, all beatified and canonized, were done to death by hanging, drawing and quartering.
They have perpetual adoration of the Blessed Sacrament 24 hours a day with an altar at the base of a reconstructed gallows that was used on that spot for years to execute people with. The "Tree of Tyburn" could hold 8 people on each of its three arms on its triangular shape . . .
The gallows is marked with the last sayings of some of the Martyrs: "Jesus, save me" "Jesus, be a Jesus for me!" "Let me not forsake Thee at this moment, Lord Jesus!"
On display nearby is a piece of the hat of St Thomas More, and some relics of Mary Queen of Scots who is not beatified, but who is highly venerated by English and Scottish Catholics.
Also there is a piece of a white shirt stained with the blood of one of the Martyrs.
The nun giving us the tour said, "Look at the high quality of this silk shirt! They wore their very best clothes on the day of their executions, you know. After all, they were going to Heaven . . ."
Alex