Yes it was my trip with my girlfriend at the time. I still have the same +8, 30 years on.
Uk to Travemunde/Rostock and took the ferry to Helsinki. Drove across Russian border to St Petersburg, Moscow and then south to Minsk. You had to come this far south before heading west and home. The border into Poland was sealed for car traffic. So Minsk to Brest across into Poland. East Germany and home to Bristol, via W Germany, Belgium and France. Around 4k miles and it took over 3 months to organise all the visas, car insurance. Many stories.
1980 +8 Blue