The Sons of the Most Holy Redeemer

The Sons of the Most Holy Redeemer (Filii Sanctissimi Redemptoris: F.SS.R.) is a religious order inspired by St Alphonsus Ligouri, and following a form of the Rule of the Redemptorists which he founded. They are based in the Golgotha Monastery on the island of Papa Stronsay, in the Orkneys, and use the Traditional liturgy of the Catholic Church (the extraordinary form of the Mass and so on).

They were founded in 1988, and moved to Papa Stronsay in 1999. Having been estbalished in association with the Society of St Pius X (SSPX), after the Motu Proprio Summorum Pontificum in 2007 they applied to the Pontifical Commission Ecclesia Dei for the regularisation of their canonical status. Part of this process involved the change of their name to the current one; they were formerly known as the Transalpine Redemptorists.
The Sons' coat of arms.
(Here they are on their way to greet the Holy Father when he visited Scotland.)

For more information, see an article in the 'Catholic Herald', an interview in 'Inside the Vatican', their Wikipedia entry, and the community's blog.