First things first. Get in touch with a priest, perhaps one from a reputable parish or monastery in the British Isles. Talk to him about the faith, and your concerns as an isolate.
I began as an isolate, living on an island in the middle of the Pacific 2000 kilometers from the nearest Orthodox parish of any sort. I wrote priests and metropolitans from the Philippines to Hong Kong to the Midwest and Deep South. A priest in the PI put me in touch with the Greek Metropolitan in Hong Kong, who told me about a guy in South Africa running a St. Nicholas of Japan Missionary Society. The brother in SA gave me the contact information for an English speaking priest in Japan, and so began a correspondence and a telephone call or two with that priest. During this time a friend of mine at work also became interested in Orthodoxy and I put him in touch with the priest in Japan. Given our difficult situation he received a blessing from his bishop to catechize us via mail (and email). He told us what books to buy, what articles to read, then questioned us closely on what we had learned, like a distance learning college course (and it was that tough). After a year or so of this he told us we were ready and come to Tokyo as soon as we were able…and we were able to do so following Pentecost 1998. We spent several days there, were baptized, taught and quizzed more, introduced to the experience of Orthodox worship and then we went home and were only able to afford to go to church once a year for a few days for the next few years. Eventually we both ended up back stateside, but for me it's still a 2 hour drive every Sunday to get to church. Sometimes I've lived closer for a little while when work permitted, but most of the time my church commute has been 45 min. to 2 hours. Recently there has been movement starting a small mission in my area. We meet once a month and are growing, but it will be a while yet before we can establish a true parish. Still, that's only a 20 min. drive.
My point. Do what is in your hand to do, be faithful in what you have received, little or great, and in due season God will open a way. As was told to me many times during my 3 year wait between when I wanted to convert, and the time I was enabled to convert, "St. Mary of Egypt went 40 years before she communed, so do not despair." By the time I made it to the font in Tokyo I had priests in the US., nuns in Greece, and assorted clergy and laymen from Australia to Mississippi praying for me and my friend for a door to open.
Also, since you are very near Spain, why not also make a pilgrimage to visit St. James and ask his help and intercession…and since you are Irish why not get icons or icon prints of St. Patrick, St. Kevin, St. Finnian of Clonard, St. Finnian of Lindisfarne, St. Brendan, St. Columbanus, or any others whose lives and images engage your heart. We are encompassed by a great cloud of witnesses…we can ask assistance.