Surveys were sent to 2, 600 contacts in the Daycare Trust's London childcare network and 418 responded.

BBC: London parents struggling to pay for nurseries: Survey

Four of the top five policy proposals in the survey require Boris Johnson's support, said the Daycare Trust.

BBC: London parents struggling to pay for nurseries: Survey

Anand Shulka, chief executive of national childcare charity, the Daycare Trust, said an "almost universal" benefit had to be welcomed.

BBC: Childcare costs scheme 'better for parents'

Nurseries, childminders, playgroups, breakfast and holiday clubs in London took part in a survey for childcare charity the Daycare Trust.

BBC: London parents struggling to pay for nurseries: Survey

Save the Children and the Daycare Trust are conducting an investigation into how the costs are affecting families everyday lives.

BBC: Save the Children and Daycare Trust rue childcare costs

The national childcare charity Daycare Trust said the review was a chance to improve standards and represented a "victory for children's rights".

BBC: Childminder smack ban welcomed

The Daycare Trust, which recently merged with the Family and Parenting Institute charity, also said one in three local authorities were failing to make sure adequate childcare was provided for school-aged children.

BBC: Adult plays with a toddler

Anand Shukla, from national childcare charity Daycare Trust, said: "No matter how well qualified the members of staff, there are practical considerations when you increase the number of children that they have to look after, " he said.

BBC: Nursery ratios raised 'to improve standards'

The Daycare Trust's chief executive, Anand Shukla, said councils were "failing families by presiding over a continuing shortage of high quality, affordable childcare" but said that was "no doubt linked to the tight financial squeeze they find themselves in".

BBC: Adult plays with a toddler

The Daycare Trust is also disappointed.

BBC: nursery