Head-to-head verdicts on the hosting platforms agencies and B2B teams actually shortlist — with the renewal traps, per-site maths and "unlimited" fine print translated into plain numbers.
| Product | Score | Best for | From | |
|---|---|---|---|---|
| Kinsta | 8.8/10 | Performance-first agencies and B2B teams who want premium managed WordPress with clean agency tooling | From $35/mo (1 site); Business ~$115/mo (5 sites); Agency ~$284+/mo (20 sites) | Read review |
| WordPress VIP | 8.7/10 | Enterprises, governments and publishers needing governance, compliance and unbreakable scale | Quote only — from roughly $25k/yr | Read review |
| Cloudways | 8.6/10 | Agencies chasing per-site economics — unlimited sites per server on real cloud infrastructure | From $14/mo (DO 1GB); realistic agency servers $50–$100+/mo | Read review |
| WP Engine | 8.5/10 | Agencies and developers who live in WordPress — the tooling ecosystem is the product | From ~$25–30/mo (1 site); Growth ~$96–115/mo (10 sites); Agency partner pricing available | Read review |
| Pantheon | 8.4/10 | Developer-led teams and institutions running Drupal or WordPress with proper WebOps pipelines | From ~$50/mo; scale and enterprise tiers quote-led | Read review |
| 20i | 8.3/10 | UK agencies and resellers wanting unlimited sites at flat prices with UK infrastructure by default | From ~£9.99/mo (unlimited sites on reseller cloud tiers) | Read review |
| Hostinger (Agency/Enterprise) | 8.2/10 | Budget-conscious agencies and freelancers hosting many light client sites | From ~£2.99/mo intro (100 sites); renewals ~£7.99–10.99/mo; agency/Pro tiers ~£24.99/mo | Read review |
| SiteGround | 8.1/10 | Small agencies wanting managed-WP quality and white-label without premium per-site pricing | From ~£2.99/mo intro — renewals ~£11–25+/mo (the trap to model) | Read review |
| Nexcess (Liquid Web) | 8.0/10 | WooCommerce-heavy portfolios needing commerce-specific scaling and plugin/tooling extras | From ~$16–21/mo managed WP/WooCommerce | Read review |
| Krystal | 7.9/10 | UK agencies wanting ethical, renewable-powered UK hosting with agency plans and straight dealing | From ~£7/mo; agency and cloud tiers above | Read review |
Four pricing primitives, one trap each
This market prices four different ways and comparisons fail if you mix them up. Per-site managed hosting (Kinsta, WP Engine) is predictable but scales linearly. Per-server cloud (Cloudways) is dramatically cheaper at ten-plus sites but you become part-sysadmin. Reseller-style unlimited (20i, Hostinger) is unbeatable unit economics on light sites with shared-resource ceilings. Enterprise quote-only (WordPress VIP, Pantheon) buys governance, not speed. The trap is always the same: comparing a headline intro price against a renewal price in a different pricing family.
Agency features are a workflow, not a checklist
A real agency platform gives you: one dashboard for every client site, free staging you can bill-transfer to the client at handover, white-label branding, per-site user roles, and bulk operations (updates, backups, caching). WP Engine’s billing transfer and Kinsta’s MyKinsta bulk tooling are the benchmarks; 21,000+ agencies sit in these partner programs for a reason. If a host merely allows multiple sites on one plan, that is multi-site — not agency hosting.
The UK lens most comparison sites miss
For UK B2B agencies three things matter that US reviewers ignore: London or UK data-centre regions (Kinsta, Cloudways, WP Engine, 20i and Krystal all offer them; verify before signup), VAT invoicing without FX friction, and support staffing in UK hours. The two UK-native players here — 20i and Krystal — are genuinely competitive on agency economics while giving you UK data residency by default, which some client contracts now require.