Nucleus: most-reported complaints
Automated analysis of 135 public Trustpilot reviews published 2026-05-20 to 2026-09-25. TrustScore 3.8 from 1,827 total reviews — see the Trustpilot page. Quick answer: is Nucleus legit? Issues below reflect what reviewers reported, not findings of wrongdoing.
Reviewers most often report that support is unhelpful, with 44 out of 74 identified complaints citing this issue. A significant number of reviewers also mention that support is unreachable, accounting for 27 of the complaints. Additionally, issues related to account or app problems and billing errors were reported, with 15 and 9 complaints respectively.
How to reach Nucleus
These are the contact details Nucleus publishes on its Trustpilot profile, as of our last check on 2026-09-26 — phone 0131 226 9800, email [email protected], address Suite B & C, First Floor, Milford House, 43-55 Milford Street, Salisbury, SP1 2BP, GB.
The company claimed its Trustpilot profile on 2022-09-20, uses Trustpilot’s paid features, and last replied to a negative review on 2026-09-24. Trustpilot ranks it 164 of 169 in Non-Bank Financial Service. We last checked this profile on 2026-09-26 and found 7 new reviews. These are facts Trustpilot publishes about the profile, as of our last harvest.
Companies House: NUCLEUS HOLDINGS LIMITED (no. 05771207), active, incorporated 2006 (20.4 years); next accounts due 2027-09-30, last accounts filed 2026-09-02, 2 registered charges. 3 current officers (17 on record historically), 1 resignation in the last 24 months; 7 filings in the last 12 months (128 filings on record). official record — public register facts, not an indicator of wrongdoing; officer changes are routine in many company structures. Live Companies House status as of 2026-09-23.
Forum footprint: 0 MoneySavingExpert forum discussions mention this company (browse). Roughly 0 of the top, relevance-sorted search results were posted in the last 90 days — an approximate figure by construction, not a true recency count.
Elsewhere: 2.9★ on Google (21 reviews)
TrustScore over time
3.8 → 3.8 across 7 census measurements since 2026-09-07. Our own record, independent of Trustpilot’s display.
Reply behaviour over time
Solid: % of negative reviews replied to. Dashed: typical days to reply. Both as reported on this company’s Trustpilot profile, recorded whenever our census re-checked it and a figure had changed — the gaps between points are not equal: 2026-09-07 (79%, 4.8d) · 2026-09-10 (79%, 4.7d) · 2026-09-13 (79%, 4.6d) · 2026-09-16 (79%, 4.6d) · 2026-09-20 (79%, 4.6d) · 2026-09-23 (79%, 4.5d) · 2026-09-26 (80%, 4.5d).
Severity: 41% of this company’s 74 graded complaints were classified as severe (money lost, an essential service cut off, or a problem unresolved for months). See the harm index.
Reviewers here waited a median of 1.8 days between the experience and publishing their negative review (75 reviews record both dates).
Ombudsman outcomes
The Financial Ombudsman Service has published 3 decisions naming this firm (too few to quote an upheld rate).
Covers decisions dated 2026-04-20 to 2026-06-19, by the acceptance-deadline date the Ombudsman publishes — not the date the complaint was decided.
Official published outcomes from the Financial Ombudsman Service, not our analysis. Uphold rates reflect the cases that reached the ombudsman, not all complaints. source.
What their policy promises
complaint process: email, writing, or phone
“You can contact us by email, in writing to the following address, or by calling our contact centre.”
complaint process: email or letter
“We will issue written acknowledgement of your complaint promptly by email or by letter.”
complaint process: within 8 weeks
“If a final response has not been issued within four weeks of receipt of your complaint, we will let you know and will indicate when we will make further contact. This further contact will be within 8 weeks of receipt of ”
complaint process: 8 weeks
“By the end of 8 weeks, we must send you either a final response or a response which explains we are still investigating your complaint and the details of how you can refer your complaint to the appropriate ombudsman serv”
Quoted verbatim from the company’s own published policy (source page); complaint counts are census classifications. As of 2026-09-07.
Policy-page monitoring
We monitor this company’s published policy page for changes. No changes have been detected since we started watching on 2026-09-14.
Automated change detection on the company’s own published policy page — a record of when the page changed, not a judgement on what changed.
Measured reply time: across 59 negative reviews that received a public reply, the median wait was 4 days — the company profile reports an average of 5 days.
Reply quality: of 59 company replies to negative reviews analysed, 54% engaged with the specific problem and 39% were generic templates.
Review provenance: 65 company-invited reviews in the recent window average 3.37★, while 70 organic (uninvited) reviews average 2.41★.
16% of its 51 recent 5★ reviews came from accounts that had written only that one review when we captured it (the median across companies is about 39%). A high share is a reason to look closer, not evidence of fake reviews.
Sector benchmark: support unhelpful makes up 60% of this company’s complaints vs a 28% median across 169 ranked companies in its sector.
Review velocity: 652 of this company’s 1,827 Trustpilot reviews (36%) were written in the last 12 months.
What are the most common complaints about Nucleus?
Support unhelpful
44 reports · 60% of complaintsfalling“It has taken over two weeks at a time to correct very simple issues like cancelling a pending direct debit or correcting an incorrect NI number.”
5 readers marked this review helpful on Trustpilot.
“Despite this, in April I discovered that Nucleus had authorised liquidation of my entire pension portfolio without my consent.”
5 readers marked this review helpful on Trustpilot.
“you wait days for them to return phone calls”
4 readers marked this review helpful on Trustpilot.
Support unreachable
27 reports · 36% of complaintssteady“you wait days for them to return phone calls”
4 readers marked this review helpful on Trustpilot.
“no managers available no idea of timescale”
The company replied on 2026-06-09: “Dear Carol I'm so sorry to hear about the difficulties your husband has had with his transfer, I can appreciate the delays and lack of communication would be distressing. Please be assured out…”
Our classifier read this reply as a substantive response.
It promised: to escalate.
4 readers marked this review helpful on Trustpilot.
“Delayed my pension payments for months and could not explain why”
The company replied on 2026-07-07: “I'm very sorry to hear about the delays to your pension payments and the stress and inconvenience this caused. I understand how important clear communication are, and I apologise we haven't met these…”
Our classifier read this reply as a substantive response.
It promised: to escalate.
3 readers marked this review helpful on Trustpilot.
Account/app problems
15 reports · 20% of complaintsrising since 2026-09“Despite this, in April I discovered that Nucleus had authorised liquidation of my entire pension portfolio without my consent.”
5 readers marked this review helpful on Trustpilot.
“Dear Emma You say my account has been unlocked. It hasn't. I spoke to your telephone people this morning who say it hasn't been unlocked.”
2 readers marked this review helpful on Trustpilot.
“Almost nothing can be done on line - they seem to operating in the 1990s!”
The company replied on 2026-07-10: “Dear William I'm so sorry to hear about the difficulties you've had updating your bank details. I'd like to review this to understand why the teams have asked for this, but I'm unable to locate your…”
Our classifier read this reply as a substantive response.
It promised: to make contact.
2 readers marked this review helpful on Trustpilot.
Billing errors
9 reports · 12% of complaintsrising since 2026-09“It has taken over two weeks at a time to correct very simple issues like cancelling a pending direct debit or correcting an incorrect NI number.”
5 readers marked this review helpful on Trustpilot.
“incorrect pension contributions being taken and was assured it would be corrected. Weeks later, the incorrect transactions are still on my account”
The company replied on 2026-07-14: “Dear Tom I’m very sorry to hear that incorrect contributions have been deducted from your account, and that our communication regarding the progress of your case has not met the standard you should…”
Our classifier read this reply as a substantive response.
It promised: to escalate.
1 reader marked this review helpful on Trustpilot.
“Despite endless calls and emails over 6 weeks, by both my wife and her adviser, she still has not been refunded the payment”
The company replied on 2026-09-18: “Dear Ian I'm really sorry to hear about the delays and issues your wife has been facing. If you don't mind, could I please ask that you email [email protected] to allow me to assign this to a…”
Our classifier read this reply as a substantive response.
It promised: to make contact.
Other
9 reports · 12% of complaintssteady“Complaint not resolved after many weeks.”
2 readers marked this review helpful on Trustpilot.
“A complaint about this registered in March still hasn’t been resolved”
The company replied on 2026-05-22: “Dear Mr Madill I'm really to sorry to hear about the difficulties and delays you've experienced with your transfer, I can appreciate how distressing this can be, and isn't the level of service we…”
Our classifier read this reply as a substantive response.
It promised: to make contact.
“Initially your clients sent in hard copy paper request for funds ( NOT our clients at the time) this was not actioned by yourselves”
The company replied on 2026-09-24: “I'm really sorry to hear this. Please be assured we take feedback on board, and this is being looked into by the team. Kind regards Emma”
Our classifier read this reply as a template response.
Overcharging
4 reports · 5% of complaintsfalling“this company is holding onto funds my 89 year old mother desperately needs yet despite the multiple calls with empty promises of help offered still no money has been sent.”
The company replied on 2026-06-04: “Dear Mr Gordon I'm sorry to hear you still haven't had an update, please be assured our complaints team are working hard to review the ongoing concerns we have received and will provide you with an…”
Our classifier read this reply as a substantive response.
It promised: to escalate.
1 reader marked this review helpful on Trustpilot.
“Their charges have increased substantially since James Hay migration”
The company replied on 2026-05-27: “Dear Mervyn, I’m very sorry to hear about your experience and the difficulties you’ve faced in trying to sell down your funds to purchase an annuity. I appreciate how frustrating this situation must…”
Our classifier read this reply as a template response.
1 reader marked this review helpful on Trustpilot.
“Despite 2 formal complaints nothing has been answered”
The company replied on 2026-08-07: “Dear Patricia I'm really sorry to hear about the difficulties your facing trying to get your payment sorted. I've been unable to locate your account on our system from your username to allow me to…”
Our classifier read this reply as a substantive response.
It promised: to escalate.
Compare Nucleus with…
Method: reviews are classified into a fixed complaint taxonomy by an automated reader; every category shown is backed by at least two verbatim quotes from distinct reviews. Trends are computed from dated review counts only. Negative reviews are deliberately over-sampled for evidence depth; headline percentages use an unbiased recent sample only. Report updated 2026-09-26.