Marshmallow's customers love the staff. The app keeps getting in the way.

Marshmallow's support staff are the best-reviewed thing the company has. Across 1,000 recent Trustpilot reviews, 85% of the comments about the support team are positive, and for named agents it climbs to 98%. People describe being walked through a claim with patience, or talked down off a renewal price by someone who plainly knew the policy. More than 120 reviews single out an agent by name to thank them.

The thread running through many of the bad reviews is how hard it is to reach those people when something goes wrong.

Marshmallow is the only app-first insurer in a group of nine UK names we recently put through the same analysis. There is no call centre as the front door. An in-app chat and an AI assistant stand in its place. For the easy jobs that works well: the quote is fast, the app is clean and well liked, and the pricing is competitive, particularly for younger drivers and people with limited UK driving history. Overall sentiment across the 1,000 reviews sits at 65% positive, a perfectly respectable number. The trouble starts at the moments that do not fit the script.

When you reach a human, it works

At the level of the individual agent, the service is genuinely good. The support team draws 524 separate comments and 85% of them are positive. Customers mention being treated kindly during financial difficulty, getting jargon-free explanations, and having a renewal price actually negotiated down for them.

Marshmallow support team sentiment over time.

Then a policy needs cancelling, or a claim goes in

The picture inverts at the harder moments. Cancelling a policy is 85% negative across 100 comments, with delays, conflicting answers on fees, and policies cancelled without confirmation.

Marshmallow policy cancellation sentiment over time.

Claims run 78% negative, payments 80%. The same shape appears each time: the automated path fails or hits something it was not built for, and there is no quick way to a person. One review captures the whole loop.

App to phone to chat to a dead end, with a crashed car at the other end of it.

The AI in front of the people

Everyday contact runs through the chat, and the reviews are 62% negative across 97 comments: no phone line, slow or dropped replies, and policy-change notices that arrive only by email and are easily missed.

Marshmallow customer communication sentiment over time.

The AI assistant is fine for simple questions and actively unhelpful for anything else, because it sits between the customer and the staff everyone otherwise praises. When it gets something wrong, the error rides straight into the policy.

What the split is telling them

The no-phone, AI-first model is an efficiency bet, and most of the time it pays off. That is why the overall score is healthy and the staff are loved. It breaks on the rare, high-stress, non-standard cases: a write-off halfway through a policy, a disputed claim, a bot that quietly invalidated cover. Those are precisely the moments a customer wants a person, immediately.

None of this shows up in Marshmallow's overall rating, which looks fine. It only surfaces when you read the reviews one topic at a time, so the loved staff and the broken cancellation flow stop cancelling each other out. You can read the full Marshmallow breakdown here.

Try it on a company you know

Marshmallow was one of nine UK insurers in that wider look, and every one of them hid its sharpest problem behind a decent headline score. You can run the same breakdown on any company, including your own. Paste a Trustpilot, App Store or Google reviews link into Sunbeam and you will get the topic-by-topic view in a few minutes, free and without an account, at sunbeam.cx/try.