Effectiveness of interventions to promote healthy eating in preschool children aged 1 to 5 years.
Health Education Authority, 1998
An older review which is still a valid and useful part of the evidence base.
It's available on the NICE website under HDA publications at:
http://www.nice.org.uk/page.aspx?o=501975
or you can download it here:
Download review (65 pages)
The full review contains a useful 3 page Executive Summary