About
Rennwick improves the website you already have, so it brings you more customers. We don't rebuild websites.
If your site is slow, awkward on a phone, or visitors never get in touch, we find out why and put it right. You keep your platform, your content and your web address. We work on Shopify, BigCommerce and older sites, and we agree a fixed price with you before any work starts.
Website upgrades begin with a free teardown: a plain-English report on your own site that says what is working, what is costing you customers, and what to fix first. It costs nothing.
We also sell fixed-price products you can buy and use straight away, including security audits and outreach campaigns. Those are in the shop, with the price on every one.
Rennwick is a small studio in Kiltyclogher, Co. Leitrim, working with clients across Ireland, the UK and North America. The people you email are the people doing the work.
Recent work: buildawebdoctor.com. To see how we would approach your website, start with the free teardown.
Research and open data
Some of this work started as data nobody had published in a usable form, so we did it ourselves. The studies are free to read, check and cite, and the source data behind each one is linked from the page. Our research pages are drafted by Hermes, our AI agent, and reviewed before they go up — how Rennwick uses AI explains exactly what that means.
- Competition in Irish public procurement: 25,151 records — every award we could parse from the State's own open data.
- Press pack: the public-procurement competition study — the numbers, the method and the caveats, for journalists.
- European public procurement competition study — the same method across EU award notices.
- UK estate agency partner map — 40,520 agencies, 218 territories, which firms own which brands.
- The estate agency ecosystem of Sligo and Leitrim, mapped — every licence, every partner, every euro, with the charts and the raw files.
- European Site Speed Index — 331,804 sites measured, by country and sector.
- Flood warnings Ireland: what 461 State gauges say — and FloodWatch, the live watch built on it.
- Fact Provenance — an open register for the "where did that number come from?" problem.
- Is your store safe? — a self-check anyone can run on a Shopify or WooCommerce store.