Child Trust Fund alternative for younger child who didn't get the automatic government fund

[Jonesthebones]

My older two children got a CTF government investment fund, one the higher amount of £500 and one the lower £250. I have a third child who didn't get one as they were too young, who is now 10. This means that that at 18 the older ones will get a lump sum transferred to them, and I was intending to match it so that they both got the same. If I set something up now for the younger one with the aim of them getting the same too, where would be the best place to put a small amount to grow to achieve the same as her siblings at 18 - any advice?

A stocks & shares Junior ISA would be the equivalent. Look for one with lowest annual costs, especially if you're not intending to add future contributions.

Thank you @Sunseed

Is there a calculator where I could work out how much I would need to put it to get an equivalent return?

Junior ISA. HL has announced today that they are cutting fees on those. There website still lists charges, so I expect that will be changed over the next week or so.

@Jonesthebones You could have a play with a basic investment growth calculator and use a conservative 5% annual growth rate. Actual growth of investments will vary, some years doing well and others not.
www.calculator.net/investment-calculator.html?ctype=endamount&ctargetamountv=1000000&cstartingprinciplev=250&cyearsv=8&cinterestratev=5&ccompound=annually&ccontributeamountv=0&cadditionat1=end&ciadditionat1=annually&printit=0&x=65&y=29

Thanks, that's useful. Looks like transferring the two older ones from CTF to a S&S ISA might be a good idea too.