OTT (Over-The-Top) is bought on CPM only, averaging $33.60. TikTok Ads is bought on CPM only, averaging $10.80. Analysis for United Kingdom in 2026.
The UK is Europe's largest digital ad market and one of the most mature globally, with roughly three-quarters of total media spend now flowing through digital channels. Google and Meta together capture more than 60% of that, but the UK has unusually strong adoption of programmatic display, connected TV (ITVX, Channel 4, Sky), and Amazon Ads relative to mainland Europe. CPMs trend 15-25% above the US in several premium categories — partly auction density, partly currency. The UK GDPR (post-Brexit) plus the ICO's increasingly assertive guidance on cookies and consent make first-party data strategy a real competitive advantage here, not an afterthought.
Connected TV and streaming platforms (Hulu, Roku, etc.)
Short-form video advertising on TikTok
The auction, the creative, the budget floor — the three things you actually need to know before picking a platform.
OTT (Hulu, Peacock, Roku, Samsung TV+, etc.) is bought exclusively on CPM with 15- and 30-second video creative. Rates run $25–40 CPM — the highest of any digital channel — because inventory is finite premium video and the ROAS story is measured against linear TV, not against Facebook.
15s or 30s video, 1920×1080 (16:9), broadcast-quality mastering. No skippable formats. Most platforms require closed captions and mezzanine-file delivery through demand-side platforms.
OTT has a real budget floor: most DSPs require $5K–10K/month minimum, and to reach reliable frequency in a metro DMA you need $15K+/month per platform.
TikTok Ads runs on CPM ($8–12 typical, higher for premium placements like TopView). CPC is available but the platform's optimization heavily favors CPM-bid campaigns. Auction density is lower than Meta but growing quickly; creative quality dominates.
9:16 vertical video (1080×1920), 9-60s (best performance 15-30s), native-feeling — polished ads underperform UGC-style creative here by 2-3x. Sound-on is standard. Captions optional but boost completion.
$500/day ($15K/month) is the practical floor for the Traffic and Conversion objectives to exit learning phase in a reasonable window. Smaller budgets work for Awareness and Video View goals.