yes yes I know it's the Daily Mail
but really.
How many seven year olds do you know who are still in nappies (apart from SN of course)???
And I really really think trying to potty train at 18 months is doomed to failure in 99% of cases. Why bother?
I trained both my dd's at just under three years, took 2 to 3 days, only a handful of accidents since. Easy.