Upvote:1
Yes of course you can. The Greek Orthodox Church welcomes all. Services are always partially in Greek and the local vernacular. I went to one church in Madrid that had speakers & prayers in Greek, Spanish, Albanian, Russian, and Arabic in the same service, representative of the members of the community - it was awesome. Iβm going to be in London for Palm Sunday (note Orthodoxy follows the old calendar so this year our Palm Sunday is Western Easter Sunday) and plan on attending church while there. There are huge numbers of non-Greek converts to Orthodoxy by those on a spiritual journey back to the most ancient of Christian religions with a beautiful full and meaningful liturgy (actually in the US in California some 15-20 Protestant parishes on a spiritual journey converted in their entirety to Orthodoxy including their clergy). Expect the full Bible as both Old and New Testament are part of our religious knowledge. And there is plenty of wisdom from texts of church fathers dating back centuries that help you to understand what the meaning and purpose of living a Christian life is all about. As well there are modern texts - Bishop Kallistos Ware - himself a convert comes to mind. These writings are phenomenal and timeless and entirely relevant to our lives today. Orthodoxy is not just about church on Sunday, it is a path.
Upvote:2
First of all, please note that Greek Orthodoxy is one ethnicity/jurisdiction within Eastern Orthodoxy. Eastern Orthodox Christians speak many languages and there are generally Orthodox churches in the native language of many countries in the world.
So to answer your question: Yes.
The Greek Orthodox Church has even published the Divine Liturgy of St. John Chrysostom in English due to the increasing number of non-Greek-speaking people in the Church.
For Eastern Orthodox churches in general, here's a list of English-speaking Orthodox churches in the UK. If you are only interested in Greek Orthodox churches, then check this out. Each Greek Orthodox church will have its own preferences on the language of the Divine Liturgy, with many being blended between English and other languages. You will need to visit to determine what each parish's practice/preferences are.