Two children's charities are to merge into a single organisation employing 600 staff.
Trustees of Kids and Kidsactive are expected to vote in favour of the proposal in June, with the merger taking place the following month.
Dr Sam Brier, chief executive of Kids, said Kidsactive had approached them three months ago as a way of securing its long-term future. "There was no financial black hole but they did feel that the size of their organisation in this climate made them vulnerable," he said.
Up to 10 jobs could be lost in administration and support services as a result of duplication of roles. Brier added that the future of Kidsactive's premises in London would be reviewed.
The combined charity will retain the name of Kids, the larger organisation with 350 staff and an annual income of £6 million.
Kids has experienced tremendous growth over the past four years through winning contracts to provide services for local authorities. Two-thirds of its income is now statutory funding.
Kidsactive, which has an annual income of £1.5 million, promotes play for children with disabilities.
Dominic Fox, chief executive of Kidsactive, said: "We believe this is the best way forward for direct play services for disabled children in London, and builds on our work to promote inclusive play around the country."