You could start with your local high street bank.
I sought Pensions advice after my first divorce in 1999. I was considering back-dating a lump sum. (The judge did the sums for me; suggesting £35,000 lump sum backdated for seven years; and worked out the percentage of income) Nowadays; I'm not sure that you can backdate anymore?
I was never short of IFA suggesting various products. Instead though - I changed my mind and invested my money in a house; (upgrading from a flat). i don't regret my choice; because property has performed better over the past ten years. I can live and enjoy it on a day-to-day basis, and when I'm retiring I can down-size and still buy an annuity policy (or whatever its called!?)
Be aware that IFA's mostly want to suggest products: I also was advised on putting £7k in an ISA. I did that; it plummeted to just £4k and it took six years to recover. That advice from IFA with the Natonwide.
Best decide what you want to do with your money; and objectives (high interest a/cs? Pension? etc) then choose a Financial product that fits that need.
If you have specific needs to understand say Capital Gains Tax enquiery; there's plenty of advice here; and you can pay specialist Tax advisors for the bits you can't fathom.
Now cross my palm with silver, and we'll tell you some more!
