hilariously just found this message...........(am now posting under a different name.
For the benefit of those who worry at c18 months, this has been opur experience now we "know" our child better.
He is now 3.3. He feeds himself absolutely fine and eats pretty well - talking is totally average, although have to admit that when I see little friends of his who are having detailed conversations at this age, I do have pangs of worry. But he is perfectly capable of asking me to turn the light on, me telling him that it is broken, and him saying to me"dont worry mummy, we can mend it with a light bulb". I think he's fine......
Much more clear why he walked so late - he has a very well developed sense of danger and is very physically nervous. So climbing (wbhich he can do) is something he chooses not to do and he hates swimming becuase he is terrified about going under.
Starting to play with other children but honestly is more intop parallel play than actually talking to them (as are most of his male friends).
I think the point to emphasis is this is a child he did everything - and I mkean everything apart from letters and numbers and colours ( v good at these) at least 3 months later than the average. He is totally NT, if pretty high maintenance but needs a firm hand and very very clear boundaries and discipline - which tend to work a treat.
Hope this helps other parents who are worried about late developers......!