It's always wise to get good advice...

https://www.ftadviser.com/mortgages/2022/08/10/is-it-the-end-for-online-mortgage-brokers/

For most it's the biggest purchase of their life. We might be biased, but if there is ever a time to get the best advice, it's when buying a house. Not only to bag the very cheapest deals and save you money, but also to get help navigating the complexities of the UK mortgage market.