Given how easy it is to get multiple quotes instantly, our best advice is to get a quote now and go from there.
Comparing multiple providers allows you to take advantage of the fact that all companies assess risks differently. This means that even if you have had an expensive quote already, there is every chance another company will offer you a cheaper taxi insurance quote in comparison.
Make sure you take the time to decide exactly what insurance you need in order to keep the cost down. If you do not need all the optional extras then get rid of some to reduce your quote.
If you are just starting out in the business you will not have any no claims as a professional taxi driver. However, there is good news as you may also find that you can use your track record from your personal driving to give you a quote that includes a no-claims bonus.
Making sure your taxi has good security measures in place will also lower risk. This includes using an immobiliser for your vehicle and parking it off the public roads at night.
You may also want to consider getting CCTV installed in the taxi, this can help achieve cheaper insurance premiums and is also useful for your own personal safety, or the safety of your drivers.