Been offered a 1993 mint condition CBR600 with service history, owned by a college engineer, really is in great nick.
Regardless of the money for it(700 squids ish!), whats to look out for in particular at this age?
£700 sounds like a good deal.
If you can, take a test ride or if the seller doesnt want to let you ride on it, tell him to ride up and down a street, while you watch, just so you can see the bike in action. Ask him to go up and down the gears.
Another thing to take note of is the ease with which the bike starts. If the bike is starting first time, every time, then thats a good sign.
Also, take a look at the condition of the chain. Obviously, at £700, you are looking for a cheap run around that you aren't going to have to spend money on, immediately. If the chain is too loose/long and is at its maximum adjustment level, then you may have to buy a new chain/sprockets immediately, which will set you back about £80.
Another thing to check are the tyres. They should have decent tread left on them. If not, you will end up having to buy new tyres, soon after buying the bike, which will set you back around £100/tyre.
Don't rush things when inspecting the bike, take your time to check all parts of the bike. If the owner isn't hiding anything, then he won't mind you looking at everything.
Also, check the paperwork. Take your time while inspecting these documents.
It's a Honda, so these things are very reliable - don't be put off by high mileage.
For £700 though, don't expect too much.
Take a look on adtrader.co.uk and autotrader.co.uk, just to get an idea of what £700 buy's you.
Let us know how it goes.