Hi everyone, Just got a Mercedes - YEAH!

My question may be a bit tricky as it is UK related. I have just bought a 1985 230CE and I am worried that it might be affected by the new petrol laws in the UK. Leaded petrol is being phased out here so I need to know if I can run unleaded or I have to do any major work.
There will be additives available to adjust the octane so unleaded will work on any engine, but the general opinion of people I have spoken to is that they will not be much good. Some people have said they might even shorten the engines lifespan.
Hopefully I'll get away with just a timing adjustment?

Engine Number:- 10298022130504
First Registered 22 Feb 1985

Thanks