I assume you're talking about a new business loan? so you supplied your business plan and expected revenue figures etc? did they comment on this?
If it's a new business you obv can't rely on your business trading history or credit so they can only use your personal finances and income which in lending terms is likely 0 as UC doesn't count, do you have a credit history? good or bad). UK 'affordability' rues got a lot tighter in the last decade or so and lenders have to take extra steps to ensure people borrowing have the ability to repay.