The verdict in three sentences
A B2B corporate website redesign in London ships in 8 to 11 weeks in 2026, provided client sign-offs keep pace. The main delay driver is not the agency, it is the internal decision cycle: every week of late sign-off costs on average 900 EUR in re-scoping and replanning. A schedule with named milestones, identified owners and sign-off deadlines cuts the slippage risk by 50 %.
The typical 2026 redesign schedule
Here is the realistic milestone sequence for a B2B redesign in London, from kickoff to go-live.
| Milestone | Duration | Deliverable | Client sign-off |
|---|---|---|---|
| Discovery & workshops | 1 week | Approved brief, sitemap | 2 days max |
| UX & wireframes | 1-1.5 weeks | Zoning, journeys | 3 days max |
| UI design mockups | 1.5-2 weeks | Mockups 5-7 pages | 3 days max |
| Integration & dev | 3-4 weeks | Site on staging | Rolling review |
| Content & SEO | 2 weeks (parallel) | Copy, 301 redirects | 3 days max |
| Acceptance & fixes | 1 week | Tested site, bugs fixed | 2 days max |
| Go-live | 2-3 days | Site in production | Go/no-go |
| Total | 8-11 weeks | Delivered site | ~13 days of cumulative sign-off |
Content/SEO runs in parallel with integration: without that overlap, add 2 weeks to the total timeline.
The real cost of sign-off delays
Schedules almost never slip on the technical side. They slip on approval back-and-forths. Here is the 2026 quantified impact.
| Delay cause | Frequency | Timeline impact | Estimated cost |
|---|---|---|---|
| Late mockup sign-off | Very frequent | +1 to 2 weeks | 900-1,800 EUR |
| Late client content | Frequent | +2 to 3 weeks | 1,800-2,700 EUR |
| Mid-project scope add | Frequent | +1 to 3 weeks | 1,500-4,500 EUR |
| Decision-maker unavailable | Medium | +1 week | 900 EUR |
| Brand change during dev | Rare | +2 weeks | 2,500 EUR |
| Delayed client acceptance | Medium | +1 week | 900 EUR |
The rule: naming a single client-side owner with decision power halves sign-off delays.
Mini case study
Nadia, marketing director at a mid-cap logistics firm in London (120 staff), launches a redesign planned over 9 weeks for 13,500 EUR. At the mockup milestone, sign-off waits on the CEO who is away 2 weeks: +1,800 EUR of re-scoping and a slipped trade-show date. By appointing a decision-making deputy and freezing content at week 2, she recovers time on the parallel phases and delivers in 9.5 weeks instead of 12. Net saving: 2,700 EUR and a launch held before the show.
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FAQ
Can a B2B redesign ship in under 8 weeks?
Yes for a 5-7 page site with supplied content and an existing brand: 5 to 6 weeks is doable. Below that, acceptance quality and SEO suffer, with a 20 to 40 % traffic-loss risk.
What stretches the timeline most?
Content. In 60 % of projects, late copy adds 2 to 3 weeks. Preparing 80 % of content before kickoff is the best accelerator.
How much sign-off time should the client budget?
Around 13 working days cumulative across the whole project. Block those slots ahead: a sign-off slipping one week costs roughly 900 EUR.
Should SEO be in the schedule?
Yes, in parallel: 301 redirect plan, keywords, tags. Deferring SEO past go-live loses on average 30 % of traffic for 6 to 10 weeks.
How do I hit a trade-show or event date?
Work back from the event date: for a site due 15 March, kickoff must happen 10 to 11 weeks before, with 15 % contingency margin built in.
Let's scope your project. Give us your target date and scope: we return a realistic milestone schedule and a detailed quote within 48 h. WhatsApp +221 77 596 93 33.
Mohamed Bah
Fondateur, Kolonell
Passionate about digital and entrepreneurship in Africa, Mohamed has been helping Sénégalese businesses with their digital transformation since 2020. Founder of Kolonell, he believes every SME deserves a professional and accessible online présence.
