The best mortgage to suit your needs will vary depending on your individual circumstances. If you want to be mortgage free as soon as possible, consider taking out a mortgage with a shorter term, such as 25 years as opposed to 30 years, and make the highest possible mortgage repayments. You might also want to consider a loan with an offset facility to help reduce costs. Investors, on the other hand, might have different objectives so the choice of loan will differ.
Whether you decide on a fixed or variable interest rate will depend on your own preference for stability in repayment amounts, and flexibility when it comes to features.
If you do not have a deposit or will not be in a financial position to make large repayments right away you may wish to consider asking a parent to be a guarantor or looking at interest only loans. Again, which one of these options suits you best is reliant on many factors and you should seek professional advice if you are unsure which mortgage will suit you best.