You need to prove the ability to pay back the loan - which means you need verifiable income. This usually means you need to be working.at the time you apply for the loan. And many lenders require you to have been working for some length of time (i.e., at least 6 months or a year).
You need to be able to prove you can pay back the loan.
Money that exists in your bank account is not proof of that, you need verifiable income from a job.
Also, you'd be stupid to get a loan for a holiday.
If you have no source of income, banks won't give you a loan. You need to have a way of paying it back.
You can't get a loan if you can't show how you'll be able to pay it back.
How do you plan to pay it back with no job? Yes you need a job. They want to know you have the means to repay.
You have NO chance at all. You need a job and a good credit rating in the UK.