When approaching how to fund your plant, there are four areas you need to consider
Explore if your oversight body supports church planting and apply to them for funding. If you are in the London Diocese, you may qualify for a church planting grant. This can be discussed at a consultation.
Talk to the senior leader of the sending church to encourage a budget line for a church plant or to have an offering.
You need to be clear with your core group that they should be generous with what they give. Lepton is a great tool for setting up regular givers.
Talk to other church planters about individuals or grant-making trusts who might be able to support your plant.