conditional clause on these terms
These are the terms on which Vistara Software takes on work. They are the same for every engagement, written in plain English, under the law of England and Wales. The written scope for your engagement adds the detail.
Version of 13 November 2026
VISTARA SOFTWARE LTD, company number 17431091, registered in England and Wales, registered office Office 1880 60 Tottenham Court Road, Fitzrovia LONDON, W1T 2EW United Kingdom (“we”), and whoever engages us (“you”): a business, or a person engaging us for something at home. Where a paragraph applies only to consumers, it says so. Nothing in these terms takes away a right the law gives a consumer.
Sending a brief, opening a client room or answering our questions creates no contract and commits you to nothing. We reply with questions. If the work is something we can do well, the reply proposes discovery; if it is not, we say so, and why.
Every engagement starts from a written scope that both sides agree to in writing; an email that says so is enough. The scope sets out:
These terms apply to every engagement and the scope adds the detail. Where the two disagree, the scope wins, except where these terms protect a right the law gives you.
Either side can ask to change the scope at any time, in writing. Before a change is agreed, we tell you what it does to the timing and to the rest of the work. Nothing outside the agreed scope is built until you have agreed to it in writing, so the work never changes shape quietly.
We do the work with reasonable care and skill, as the law requires: the Consumer Rights Act 2015 for consumers, the Supply of Goods and Services Act 1982 for businesses. We do it within the time the scope gives, or a reasonable time where it gives none. In practice that means:
Time with the people who do the work, during discovery and testing. Answers and decisions within the time the scope allows. The developer, store and hosting accounts the software will live in, opened in your own name; we help you do it. Words, names and pictures you have the right to use. And word of any law or rule your trade follows that the software touches.
If something we need arrives late, the timing moves by the same amount, and we tell you so in writing.
The code we write for you is yours. Its copyright is assigned to you in a signed document at handover, as the Copyright, Designs and Patents Act 1988 requires, or, if an engagement ends early, for everything delivered by then. The repository moves into your own account with its whole history, the app is published under your own developer account, and every password and key is rotated so that none of ours works any more.
Third-party and open-source components keep their own licences, and each one is named in the component list you are given. Tools and know-how we had before your engagement stay ours; where any of them ends up inside your software, you get a permanent licence to use it, change it and pass it on with that software.
If the work means handling personal data for you, such as your customers’ or your staff’s details, we do it as your processor under a written agreement that meets Article 28 of the UK GDPR, signed before we touch the data. We use only what the work needs, keep it secured, use it for nothing else, and return or delete it when the work ends. How we handle our own clients’ details is in the data we hold.
Each side keeps confidential what the other shares in confidence: your business, your processes and your data on our side; our working materials on yours. That does not cover what is already public, or what the law requires to be disclosed, and it lasts after the engagement ends.
Faults found before handover are fixed as part of the work. After handover, the scope names a support term with security updates, and within it faults in what we built are fixed. Anyone can report a vulnerability as our security disclosure policy describes. If support is going to end, you hear at least a year before, as the UK’s Software Security Code of Practice asks of suppliers; software that is retired goes with notice, an export of its data and a plan for its listing.
consumers only engaging us for something at home
If you engage us as an individual, for something outside any trade or business of yours, these also apply.
A service must be carried out with reasonable care and skill, and digital content must be of satisfactory quality, fit for any purpose you told us about, and as described (Consumer Rights Act 2015). If it is not, you can ask us to do the work again or put it right, and the Act gives you further remedies where that cannot be done. Nothing in these terms affects those rights; Citizens Advice explains them in full.
An engagement agreed by email or online can be cancelled within 14 days of the day it was agreed, without giving any reason, under the Consumer Contracts (Information, Cancellation and Additional Charges) Regulations 2013. Tell us clearly, by email to contact@vistarasoftware.site.
If you live in Scotland or Northern Ireland, you can bring a claim in the courts where you live.
Either side can end an engagement by telling the other in writing, with the notice the scope sets. Either side can end it at once if the other seriously breaks these terms and has not put it right within 14 days of being asked to. However it ends, we hand over everything done up to then, exactly as at the end of a finished engagement: the repository, the accounts, rotated keys and an export of the data.
Nothing in these terms limits or excludes liability for death or personal injury caused by negligence, for fraud, or for anything else the law does not allow to be limited, and nothing limits a consumer’s statutory rights. For a business client, any further limit on either side’s liability is written into its scope and agreed before the work starts. Neither side is responsible to the other for losses that neither could reasonably have foreseen when the scope was agreed.
If something goes wrong, tell us first: our complaints policy says what happens and when. These terms, and any dispute about them, are governed by the law of England and Wales, and its courts decide disputes, except that a consumer who lives in Scotland or Northern Ireland may bring a claim in the courts where they live.
This is the version of 13 November 2026. We may change these terms for future engagements. An engagement already agreed stays on the version that was current when its scope was agreed, unless both sides agree otherwise in writing.
