Koreen here from the Guru Team at Shopify. Thanks for posting. :)
We do have some third party finance apps available within the UK. These can be downloaded to your admin, direct from our Shopify App store.
Some suitable options for you may be:
Another great option to gain funding for your business is via Crowdfunding. I'm not sure if you may have considered this? We have a really great manual on the ins and outs here: Shopify's: Ultimate Guide to Crowdfunding.
However, if you're looking instead to allow your customers to pay for your items in installments, LAY-BUY Powered by PayPal is a handy option. This is integratable with each Shopify admin, and allows for customers to pay for their products over time.
I hope this helps!
Yes, why not visit Aone Finance which is based in Uk for all type of loans and finance. Aone Finance is an online lending source that provides easy and flexible features in each of its borrowings. Its service includes easy repayment, no extra charges, and flexible interest rates. However, when you apply for any of the financial assistance makes sure you through all the terms and conditions carefully.