Lump Sum Investment

This list is kept up to date

https://www.askaboutmoney.com/threads/term-deposits-fixed-lump-sum-savings.101813/

Okay, but then why are you considering bonds?

"Bonds" is a vague term.

Do you mean direct purchase and ownership of Govt bonds, held in a stockbrokers account like DeGiro?

I have done this recently. I bought the bonds below par, as the capital gain on Irish Govt bonds is tax-free.

Or do you mean buying a bond fund? Like a managed fund that owns bonds? Or a bond ETF?

Bear in mind that over the long-term, bonds do not give the best return, of the four main asset classes.

The best return is from holding shares.

Shares are somewhat risky obviously, but you can mitigate your risk by buying into and holding rock solid shares, there will be ups and downs but over an extended timeframe you should do OK. Here's an example.

https://www.macrotrends.net/stocks/charts/BRK.B/berkshire-hathaway/stock-price-history

The usual warning that value of your investment can go down as well as up

If you have an account with a broker just hit the buy button on BRK-B

If you don't have an account with a broker then you will need to set one up first, easy enough to do