If you've formed a limited company, you could raise money by selling shares. This is a very common approach for financing or raising money for a company, but will mean losing a portion of any profits the company makes in the future.
Many businesses are able to fund their initial startup with no formal borrowing. You may find your own savings are enough. You may also be able to call on friends and family to back you, in which case it’s still best to put things in writing to avoid misunderstandings.
Finally, you may want to consider non-financial support to offset some of your initial expenses. This could include reaching out to friends or acquaintances for the use of premises, equipment or storage that you could use temporarily. Free resources can be as valuable as funding, especially in the early stages of setting up a business.