The robo-advisor pitch is genuinely tempting. Tell us your goal and your risk tolerance, we'll build and rebalance a portfolio for you, and you don't have to think about it. For UK adults who don't want to learn investing, this is closer to a credible answer than anything that existed in 2014.
The honest framing in 2026 is that whether a robo-advisor is the right answer for you depends on what you'd otherwise do. If you'd otherwise leave the money in cash, any robo-advisor is materially better than nothing. If you'd otherwise DIY on Vanguard, robo-advisors charge 0.4-0.7% more per year, which compounds to £30,000-£36,000 over 30 years. If you'd otherwise hire a real financial adviser, robos are dramatically cheaper for the routine stuff — and a real adviser is still the right answer for non-routine stuff.
We tested four UK robo-advisors — Wealthify, Moneybox, Nutmeg, and Plum — across six months.
The benchmark you're actually comparing against
Before evaluating any robo-advisor: a Vanguard Stocks & Shares ISA holding LifeStrategy 80% Equity costs about 0.37% all-in (0.15% platform fee plus 0.22% fund OCF). The result is a globally-diversified, automatically-rebalanced portfolio — essentially what robo-advisors offer — at lower fees.
The robo-advisor pitch isn't "we beat Vanguard on cost." It's "we make this easier, and the experience justifies the extra fees for some people." That's an honest pitch. The question is whether the experience is worth £30,000 to you over a working life.
The four worth knowing, by what each is best for
Wealthify at ~0.76% all-in (0.6% management + 0.16% fund costs). Owned by Aviva since 2017. Five risk levels (Cautious to Adventurous), pre-built portfolios of low-cost ETFs, ISA / GIA / pension wrappers. Simplest UX of the four, fewest decisions to make, Aviva-backed regulatory pedigree. No LISA. The right answer for UK adults who want absolute simplicity and would otherwise not invest.
Moneybox at £1/month subscription + 0.45% platform fee + 0.12-0.18% fund costs (~0.7-0.85% effective on small balances). Started as a round-ups micro-investing app, grown into a serious platform offering ISAs, LISAs, SIPPs, and savings products. The all-in-one wrapper coverage is the real selling point — particularly the LISA with 25% government bonus, which is the killer feature for adults under 40. Round-up investing is a quietly effective behavioural feature.
Nutmeg at ~0.45% (fixed allocation) to ~0.85% (fully managed) all-in. The original UK robo-advisor, owned by JPMorgan since 2021. Most portfolio options of the four — managed, fixed allocation, socially responsible, smart alpha. Strong ISA, SIPP, JISA, LISA wrappers. Right for UK adults who want broader portfolio options including ESG / socially responsible.
Plum at subscription tiers £2.99-£14.99/month + fund costs. More micro-savings-and-investing app than traditional robo. Strong on automatic round-ups, "smart" savings transfers, and behavioural features that suit reluctant savers. Plum analyses spending and moves money to savings or investments automatically. Useful for reluctant savers who need the app to do the work of nudging them. Fee structure is confusing across tiers; less institutional credibility than Nutmeg or Wealthify.
What six months of testing showed
For our reluctant-investor tester (who'd otherwise leave money in cash): all four were better than cash. Wealthify won on simplicity; Moneybox won on app polish.
For our DIY-capable tester: all four lost to Vanguard LifeStrategy on fees. The convenience premium wasn't worth it for someone happy to manage their own portfolio.
For our LISA-eligible tester (under 40): Moneybox was the clear winner. The LISA with 25% bonus is the right tool for first-home or retirement-at-60.
The pattern: robo-advisors aren't a single product. They're a suite of products, each best for a different user. Pick by your circumstances, not by the marketing.
The fee compounding maths nobody puts in the brochure
Over 30 years of investing £500/month at 6% real return:
| Platform | All-in fees | Final value |
|---|---|---|
| Vanguard LifeStrategy DIY | 0.37% | £475,000 |
| Wealthify | 0.76% | £445,000 |
| Nutmeg fully managed | 0.85% | £439,000 |
| Moneybox (effective small-balance) | 0.85% | £439,000 |
The £30,000-£36,000 gap between Vanguard DIY and a robo-advisor over 30 years is the cost of the convenience.
For some UK adults, that convenience is worth £30k-plus over a lifetime — particularly if without the robo they'd have left money in cash. For others, particularly those willing to spend an hour learning Vanguard, it's an expensive convenience.
What no robo-advisor solves
- The decision to invest at all. All four make investing easier; none make you do it.
- Major financial decisions (mortgage, life insurance, inheritance planning, taxation above basic): get a regulated financial adviser.
- Market timing. Robos don't try to time markets. This is correct, not a flaw.
How I'd actually advise picking
UK adults under 40 wanting a simple LISA + ISA setup: Moneybox. Accept the marginal fee premium for the LISA bonus and the easy app.
UK adults 40-plus wanting simple robo for ISA / SIPP: Wealthify for simplicity, Nutmeg fixed allocation for slightly lower fees with more flexibility.
UK adults willing to DIY: Vanguard Investor. LifeStrategy 80% Equity in a Stocks & Shares ISA. Done. The fee saving over 30 years is meaningful.
UK adults whose alternative is "leave money in current account": literally any of the four is better than that. Wealthify probably the cleanest start.
What I'd swerve: paying robo-advisor fees on a £100k-plus portfolio when you'd be just as well-served by Vanguard DIY at half the all-in cost. The convenience premium is worth less the bigger the portfolio.
This article is general consumer information, not regulated investment advice. Investments can fall in value as well as rise. Past performance does not predict future returns.
Affiliate disclosure: Morningfold has affiliate partnerships with Wealthify, Moneybox, Nutmeg, Plum, and Vanguard. Verdicts above are based on testing — see editorial standards.