Bottom-up initiatives arising from the research community are a key component of the network, with 40% (£500,000) of the Network funding being allocated to flexible funding calls. Taking the scientific evidence on biases in peer review into account, all flexible funding under the IGNITE Network+ has been awarded on the basis of double-blind peer review. The IGNITE Network+ offered two different types of flexible funding, both of which are outlined below. All of the funding calls have now closed.