They actually work in very similar ways, although there are some differences. The main ones are the deposit required on a commercial mortgage tends to be higher than residential mortgages.
The fees also tend to be a little higher, as mentioned earlier on the page, often 1.5-2% of the loan amount. These higher fees continue as stamp duty also tends to be higher for commercial property.
Finally, although the process of applying for a mortgage for a business can be a little more involved, there tends to be more support available from your lender once the money has been lent.