It really isn't .... unless your circumstances are complicated.
Hard to comment further without knowing what you have etc.
As a general rule, assuming there's a Mrs QC, it's possibly a good idea to keep any final salary pensions as final salary (meaning not to take the, on the face of it, attractive / tempting cash transfer value). Final salary pension payments bring the certainty of income, and also a spouse's pension should anything happen to you.
And then it may well make sense to bring all your defined contribution pensions into one SIIP scheme (assuming you have more than one). It's fairly easy & painless to transfer them, and easy to manage them in a platform like Vanguard or AJ Bell (both Which recommended, and also personally recommended).
When I was approaching retirement and into the first couple of months I spent a lot of time reading about pensions, investing, basic taxation, and related. It's worth taking time to at least understand the basics yourself, as you are likely to care more about your money than anyone else and all others are after at the end of the day is a slice of it!! Most of the industry is happy to keep people thinking it's complicated and a minefield, and that they know what's going to happen next, etc etc - they are there to make money for themselves or their shareholders.
J Bogle. Little book of common sense investing.
JLCollins. Simple path to wealth.
D Sawyer. Reset: How to restart your life and get FU money.
In that order, with the last one being a UK based book after you've understood the general principles from the 1st 2 US based ones (although the principles are fairly easy to 'translate' to UK).
Free YT blogs like Chris Bourne, Damien Talks Money, etc are worth following too.
I wasn't ignorant to tax, savings, investing in earlier years, but I wish I'd read / knew the above a few decades ago. I'd honestly be minted now (instead of 'just' very nicely comfortable and relatively untroubled in relation to money matters). Personally I won't be paying any money for a financial advisor but might consider paying for tax advice if my situation was more complicated or if I had more to leave when I'm gone. But that's just my situation; yours could be very different for various reasons and paying for advice might make sense (or might not).
Btw, I haven't for one minute regretted retiring! My wife was part time to start with, but has now also retired fully.
