There are many different companies that I could get a loan from. They all offer pretty much the same service, and you have to specify what length of time you want the loan to be over, and then it will tell you the monthly repayments. Generally the longer the period that you pay it back, the higher the interest rate will be. However, you wouldn't want to get a loan form a company like wonga.com as they charge something like 1000% interest which is ridiculous. Also I could potentially take out a personal loan with a company like Tesco bank which only charge 3% interest which is a very reasonable rate.
It is also possible to get a grant for your business. A grant is a lump sum of money that you are given to invest in your business which unlike a loan, you don't have to pay back. It is quite easy for an artist to get a grant from places like PRS, however for a sound and lighting business it is a little harder as most of the market is dominated by big companies. I couldn't find any grants in particular, however if you were to partner up with a school or something then you could get a grant for doing so.