Obviously, having a large deposit and plenty of disposable income will make you more attractive to a mortgage lender. You can work out just how much you can afford to borrow by using a mortgage calculator and on a comparison website this should show you the best deals available for your situation, and give you options such as an offset mortgage calculator or a buy to let mortgage calculator so that you can work out the best type of mortgage for you. With this information you can then approach lenders who are more likely to see you as a desirable applicant.
But what else can you do to ensure that lenders want to lend these large loans to you? Firstly, it is important to have a good credit score. You can find out what your credit report says by looking online and contacting Equifax or Experian for your report. If there are any mistakes on it which are affecting your credit score these can be easily rectified and this will help your rating.
Another thing to do, regardless of your credit history, is to build up a good credit score by getting a credit card. Most lenders want to see that you a capable of keeping up with payments on some form of credit and this is something that can impede first time buyers who have never taken out any form of credit. Keep purchases small and pay off the balance each month and you should soon have a good credit history for your lender to see.
Put yourself on the electoral roll to help lenders to confirm your identity quickly and put aside any worries of fraudulent activity. This is a simple step that will help in any borrowing you may want to do, whether it is a mortgage or another type of loan.
Getting a mortgage agreed in principle can also help you not just with borrowing the money you need but also when it comes to securing the property you want quickly and with the least stress possible. Sellers will want the process to go as quickly and easily as possible and an agreement in principle means that you are a serious buyer who can afford the property. It also looks good to the lender for the same reasons.
Finally, speak to a financial adviser in advance to find out how best to apply for your mortgage. If they represent you with lenders and sellers you will come across as a more desirable candidate for a mortgage, and to buy the property you want.