Best Sirion Alternative for Enterprises in the UK (2026)

Sirion, from SirionLabs, is an AI driven enterprise contract lifecycle management platform. It is strongest after signature, in obligation management, supplier and vendor contract tracking, contract analytics and risk scoring across very large portfolios. Big, procurement heavy organisations use it to keep thousands of supplier agreements under control. It is a serious tool, but enterprises in the UK still compare it against other platforms on fit, AI depth, implementation effort and cost. This guide explains what Sirion does well, why enterprises look around, and the real alternatives compared fairly. ## What Sirion is and who it suits Sirion suits large enterprises and procurement teams that run complex, high volume supplier contracting and need deep post signature obligation and performance management. For that buyer it is a capable, well supported platform. ## Why UK enterprises look for an alternative Even strong platforms get compared. The first reason is cost and scale, since Sirion is priced and built for the large enterprise and can be heavy for a smaller team. The second is implementation weight, because a full deployment is a project. The third is focus, since its centre of gravity is supplier and post signature management rather than fast front end drafting. The fourth is pricing transparency, because quote only pricing makes budgeting and comparison harder. None of this makes Sirion a weak product. It means a buyer should test whether AI, workflow, cost and jurisdiction fit match their real priorities before committing. ## What enterprises actually need An enterprise needs scale, governance, integrations with its existing stack, strong security and support, and the ability to run contracting across many business units and jurisdictions. Any switch must clear procurement, security and integration review and justify itself against a platform already in place. ## The real alternatives for a UK enterprise, compared fairly Icertis is an enterprise grade CLM used by very large, highly governed organisations across many business units, leading on pure scale and configurability. Pricing is quote based and premium. Ironclad offers a strong workflow designer and AI features for orchestrating the whole contract process, popular with large commercial and legal teams. Pricing is quote based. DocuSign CLM extends the widely used DocuSign signature product into managed workflow and storage, a logical step for teams standardised on DocuSign. Pricing is quote based. LinkSquares focuses on AI analytics and extraction across a large executed estate, suited to in house teams that need visibility and reporting. Pricing is quote based. Adira is an AI legal operating system built on Anthropic's Claude that drafts, reviews, edits and tracks contracts in one workspace, worth a look as a challenger where AI drafting depth and transparent pricing matter, with the honest caveats below. ## Where Adira fits for enterprises, and where it does not Be honest first. For the largest multi entity rollouts with heavy configuration, deep procurement integration and a long enterprise support record, Icertis, Ironclad and the incumbent itself still lead on scale, ecosystem and proven connectors, and an enterprise should weight that heavily. Adira's honest edges are different. It is built on Claude for drafting and clause by clause review, models contracts as a structured clause tree with per clause risk, tunes output to a company persona, and does not train on your contract corpus, while its Enterprise tier adds SSO and SAML, audit logs and data residency. Adira is India first in its deepest coverage and expanding, so a UK enterprise should scope UK and EU jurisdiction depth, integrations and security carefully in a trial. On pricing, Adira publishes per seat rates, roughly 70 and 140 pounds per seat per month billed annually as an approximate conversion from about 89 and 179 US dollars for its Practice and Firm tiers, with a 7 day free trial and Enterprise priced custom (approx only, check Adira's pricing page for current figures). That is a transparent reference point that quote only incumbents rarely offer. Adira reports that 18 law firms use it and rank it highly, with contract review and due diligence cut from 10 to 12 days down to under 2 hours in those deployments, its own measured result worth testing on a slice of your own contracts. See how Adira approaches drafting and review. ## How to choose Start from what Sirion did not meet for you. If you need pure scale and configurability, look at Icertis. If you need flexible workflow orchestration, look at Ironclad. If you are standardised on DocuSign, look at DocuSign CLM. If you need analytics across a large executed estate, look at LinkSquares. If AI drafting and per clause review with transparent pricing below Enterprise matter, put Adira on the shortlist as a challenger. Then run a controlled pilot, bring security and procurement in, test the integrations you need and model the fully loaded three year cost. ## Switching from Sirion: what to check before you move A move only pays off if the new tool fits how you work, so run the checks a careful buyer would. First, test export and import: confirm you can get your existing agreements and their key metadata out of Sirion and into the new tool without rekeying, and that renewal dates and obligations carry across. Second, test the integrations you actually use, from signature and storage to your CRM or finance stack, rather than the full list a vendor advertises. Third, put security and data handling through review early, including where data is stored, who can access it and whether your contracts are used to train any model. Fourth, run a real pilot on the contract types you sign most and measure drafting and review time against your current baseline, not a demo script. Fifth, model the fully loaded cost over three years including setup, training and any services, not just the per seat headline. A switch that clears those five checks is one you can defend to the business. This article is general information, not legal advice.