The best way to close a UK company depends on the circumstances. If the company has not traded, changed names, face threats of liquidation, or has agreements with creditors for the past three months, then a voluntary strike-off using the DS01 form is the cheapest and most efficient option. However, if the company is insolvent or has outstanding creditors, then a formal process such as members' voluntary liquidation or creditors' voluntary liquidation may be necessary.