SMT FRY FLT IN FOREIGN AIRSPACE RUNS AFOUL OF FOUL ENRTE WX AND PERFORMS UNAUTH LNDG ON WRONG RWY IN A NIGHT OP.

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I WAS ON A SINGLE PLT TRANSATLANTIC XING FROM GLASGOW; SCOTLAND TO REYKJEVIK ICELAND; IN AN SMT TWIN. AT SOME POINT IN THE FLT; I LOST MY CABIN HEATER AND ALSO THE AUTOPLT BECAME COMPLETELY INOP. I WAS HAVING MANY PROBS WITH MAINTAINING MANIFOLD PRESSURES ON BOTH ENGS AT FL240 TEMP MINUS 48 DEGS C TO MINUS 50 DEGS C. THE TEMP IN THE CABIN BECAME UNBEARABLY COLD WITHIN SEVERAL HRS OF THE FLT. I ALSO STARTED HAVING FURTHER PROBS WITH THE L ENG AND SUSPECTED FUEL LINE ICE. I WAS ALREADY MORE THAN 2/3 OF THE WAY TO REYKJEVIK AND HAD ALREADY EXPIRED MORE FUEL THAN WAS PLANNED DUE TO MANIFOLD PROBS AND ALSO WORSE THAN EXPECTED HEADWINDS. WINDS MUST HAVE VARIED BTWN 50 TO 90 KTS HEADWIND. I WAS RUNNING LOW ON FUEL AND THE PROBS PERSISTED INCLUDING NOW MY OIL TEMPS ON BOTH ENGS WERE BELOW TO NEAR REDLINE AND THE OIL PRESSURES WERE VERY HIGH ABOVE RED LINE. THE WX AT BIRK WAS GETTING VERY LOW WHICH WAS UNFORECASTED. ATC HAD DEMANDED THAT I LAND IN BIVM; OR DISCONTINUE EMER. (I HAD DECLARED AN EMER WITH ACR EARLIER.) BASED ON THE INFO I HAD; INCLUDING THE CIRCUMSTANCES I WAS DEALING WITH; THIS WOULD NOT HAVE BEEN A GOOD DECISION. I CANCELED EMER AND CONTINUED TO BIRK IN DISTRESS. WX BECAME VERY LOW AND THE ONLY APCH I COULD TAKE DUE TO THE WINDS WAS A LOC (NON PRECISION) TO RWY 14. WHEN I BROKE OUT OF THE CLOUDS AT MINIMUMS; I COULD NOT SEE THE ARPT DUE TO HVY ICING ON THE WINDSHIELD AND ALSO FROST INSIDE COVERING ALL THE WINDOWS. DUE TO MY LACK OF FUEL AND ENG TROUBLES; I WAS FORCED TO LAND RWY 14 RATHER THAN CIRCLE TO RWY 02. I COULD NOT POSSIBLY CIRCLE WHICH WAS WHAT TWR WANTED ME TO DO. I HAD TO BLOCK OUT WHAT THEY WHERE SAYING AND LAND ON A NON PLOWED RWY (1 FT DEEP WITH SNOW AND ICE; SHEAR ICE BENEATH) ALSO; THEY TOLD ME LATER; I HAD A 20 KT TAILWIND. THE LNDG WAS MADE USING MAINLY INTUITION WITH A LITTLE HELP FROM THE LOC; GPS; VSI AND AIRSPD INDICATOR. IT WAS A SOFT LNDG BUT SHORTLY AFTER I FOUND MYSELF SLIDING SIDE WAYS DOWN THE RWY WITH BOTH ENGS FULL PWR TO COUNTER THE INERTIA AND ALSO TO KEEP THE TAIL FROM HITTING THE GND. I TAXIED TO THE RAMP WITH NO ADDITIONAL DAMAGE. WHEN THE CAA STARTED INVESTIGATION; I REALIZED THAT THE RADIO LICENSE WAS EXPIRED. I AM NOW WAITING FOR THE CABIN HEATER TO GET FIXED SO THAT I CAN CONTINUE TO USA VIA GREENLAND AND CANADA.