How OneTwenty got 40% more surveys completed by reminding supporters who stopped halfway.
OneTwenty gives UK charities 20p for every survey their supporters complete. Provis designed and built the platform it runs on, a custom WordPress plugin for surveys, donations, reminders and exports, and has supported it since 2023.
- onetwenty.uk
- A charity survey
Client: OneTwentyCharity fundraising platform, United KingdomWhat changed after launch, as OneTwenty reported it.
The 40% and 70% are OneTwenty's own figures; the charities are listed on onetwenty.uk.
- 40%
- more surveys completed
- after the abandoned-survey reminders went live
- 70%
- less manual work
- survey exports and reporting automated, not done by hand
- 8
- charities on the platform
- each with its own survey page; the first went live in December 2023
The same pattern elsewhere: in a store it is the abandoned-cart email; in a SaaS product, the sign-up left halfway.
At a glance
- Problem
OneTwenty had a new way for charities to raise money, but no website and no platform to run it on.
- Solution
A WordPress site and a custom plugin: surveys, charity accounts, donations by Stripe, PayPal or PayPoint, reminders, exports and a dashboard.
- Result
Charities run their own surveys and take donations in the same flow, and fewer supporters drop out halfway.
- Client
- OneTwenty (onetwenty.uk)
- Industry
- Non-profit technology (charity fundraising)
- Market
- United Kingdom
- Platform
- WordPress site with a custom plugin
- Services
- Web design, custom plugin development, payment integration, automation, support
- Built with
- WordPress, PHP, JavaScript, Stripe, PayPal, PayPoint, scheduled CSV and API exports
- Engagement
- Live since 2023; maintained and supported since launch
- Project lead
- Vivek Sharma
A new idea, with no platform to run it on.
OneTwenty calls itself the UK's first opinion exchange. Charities invite supporters to share their opinion, and OneTwenty donates 20p to the charity for every survey completed. When OneTwenty came to Provis it had no website, and surveys ran on traditional methods. The platform had to carry every survey along the route below.
How a survey turns into a donation
- Charity accounta charity sets up its own survey
- Invitationpaid social, email, QR code or direct mail
- Surveya supporter answers in under a minute
- Reminderan email if they stop halfway
- Donation20p to the charity, and the option to give more
- Dashboard and exportresults for the charity, exports on a schedule
Steps 1 and 3 to 6 run on the plugin Provis built. Invitations (step 2) go out through the charity's own channels.
A survey left halfway earns the charity nothing. That is why the reminders mattered.
A survey form was the easy part.
The harder problems were what happens around it: many charities on one platform, donations in the same flow, people who stop halfway, and results that have to leave the system.
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Many charities on one platform
Each charity had to create and manage its own surveys and see only its own results, while OneTwenty ran the whole platform.
What Provis builtOne custom WordPress plugin, built from scratchSurveys, charity accounts and separate admin and charity roles in one plugin, instead of several off-the-shelf plugins stitched together. Each charity sees only its own surveys, responses and donations.
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Donations in the same flow
A supporter who has just answered is the most likely to give. Sending them to another site to pay loses them.
What Provis builtStripe, PayPal and PayPoint in the survey flowSupporters give by card, PayPal or PayPoint without leaving the survey. The payment itself is taken by Stripe, PayPal or PayPoint, so card details never touch OneTwenty's server.
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Surveys left halfway
Supporters start a survey, get interrupted and never come back, and nobody was following up.
What Provis builtAutomatic reminders for abandoned surveysA supporter who starts a survey and stops gets an email that brings them back to where they left off. OneTwenty reported 40% more surveys completed after the reminders went live.
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Results copied out by hand
Every charity wanted its results, and exporting and reporting them by hand was slow and caused delays.
What Provis builtScheduled exports and a reporting dashboardScheduled jobs export survey data as CSV and through an API, ready for each charity to load into its own CRM, and each charity sees its results on a dashboard. A supporter's details go to the charity only when they tick its consent box on the survey. OneTwenty reported 70% less manual work.
Built in phases, tested, then supported.
- Plugin and dataThe survey plugin from scratch, with charity accounts and a database for clients, survey setups and responses
- PaymentsStripe, PayPal and PayPoint connected for donations
- Reminders and exportsAbandoned-survey emails, and scheduled CSV and API exports
- Tested, launched, supportedTested before launch; the first charity went live in December 2023, and Provis has supported it ever since
- One plugin, not a stack of add-ons: surveys, charity accounts, payments and exports share one codebase, so there are no separate plugins to keep in step. WordPress runs the content pages; the custom plugin runs everything that handles surveys, supporter data and donations.
- Also designed and built: onetwenty.uk, the public site where charities book a demo, each charity's survey page, and the charity dashboard.
What a supporter sees.
A live charity survey on onetwenty.uk, designed and built by Provis: one question per screen, progress the supporter can see, then a receipt for the 20p and the charity's consent tick box, in the charity's own words.
One question per screen 
Progress the supporter can see 
Receipt and consent
What a charity sees: its own dashboard of surveys, completions and money raised, by campaign and by month, and its survey data as CSV or through an API.
Live, and raising money for UK charities.
The figures below are OneTwenty's own published numbers on onetwenty.uk as of October 2026, not project outcomes.
- 85%
- survey completion rate
- £16.45
- average donation
- £17,695
- donated to charities
onetwenty.uk (opens in a new tab)Charities with a survey page on onetwenty.uk: Missing People, Fauna & Flora, Thames Valley Air Ambulance, NHS Charities Together, East Anglian Air Ambulance, Kidney Research UK, Heart Research Institute UK and CNWL NHS Health Charity.
After launch
Provis still maintains it.
The team that designed and built the platform has maintained and supported it since it went live in 2023: WordPress and plugin updates, and security patches. Eight charities have their own survey page on it so far.
Provis has also supported The Vault, an investor relations platform built on WordPress, for more than ten years.
How every Provis project runs
- One project leadyour single point of contact
- A written weekly update and a demoof what was built that week
- A staging link and your repoyou see the work as it is built; the code goes straight into your repo
- QA before launchour QA team tests every feature
- Yours from day onecode repo, cloud account and domain in your company's name; our team joins as collaborators, and you can remove access at any time
- Our team works in India, on ISTUTC+5:30: 1.5 hours ahead of Dubai, 4.5 ahead of London (5.5 in winter), 9.5 ahead of New York (10.5 in winter)
Building a platform where people sign up, take part and pay?
Tell us what your users do today and what is still done by hand. We will come back within two working days with an approach, a rough timeline and a rough cost range. No charge, no commitment.
Running a SaaS product or an online store? What carries over from this build: one custom plugin instead of a stack of add-ons, three payment providers in one flow, reminders that bring people back to what they left, and exports that run on a schedule instead of by hand.
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