Scrollingfacebook.com · Facebook app
FFacebookCatching Up
They catch up with friends, groups and their local area. Your ad slots into that feed, or into Marketplace when they look for something nearby.
35.2 to 41.5 millionpeople aged 18 and over reachable in the UK on Facebook
The whole country’s audience, platform by platform
Instagram31.1 to 36.6 million
Facebook35.2 to 41.5 million
Source: Meta, audience size estimate from the Marketing API, one platform at a time (reach optimisation), aged 18 and over, United Kingdom, pulled on 16 October 2026. A Meta estimate, best read as an order of magnitude.
Where Your Ad Appears
- Feed
- Stories
- Marketplace
- Video feed
- Search results
Source: Meta, Marketing API, placement targeting, read on 16 October 2026.
Scrollinginstagram.com · Instagram app
IInstagram
They scroll their feed, stories and reels to unwind. The image takes the first step: your offer gets discovered here, and people who already visited your site find you again.
31.1 to 36.6 millionpeople aged 18 and over reachable in the UK on Instagram
The whole country’s audience, platform by platform
Instagram31.1 to 36.6 million
Facebook35.2 to 41.5 million
Source: Meta, audience size estimate from the Marketing API, one platform at a time (reach optimisation), aged 18 and over, United Kingdom, pulled on 16 October 2026. A Meta estimate, best read as an order of magnitude.
Where Your Ad Appears
- Feed
- Stories
- Reels
- Explore
- Search results
Source: Meta, Marketing API, placement targeting, read on 16 October 2026.
WatchingInstagram app · Reels
RReelsWatching Reels
They move through short full-screen videos. Your ad slides in in the same vertical format, between two reels.
2 placementsfor Reels on Instagram in Meta’s reference: the Reels tab and profile reels
Where Your Ad Appears
- Instagram Reels
- Instagram profile reels
Source: Meta, Marketing API, placement targeting, read on 16 October 2026.
WatchingInstagram, Facebook and Messenger
SStoriesWatching Stories
They watch their friends’ stories one after the other. Your ad appears between two stories, full screen, for the time of a tap.
3 appswhere a story can carry your ad in Meta’s reference: Instagram, Facebook and Messenger
Where Your Ad Appears
- Instagram Stories
- Facebook Stories
- Messenger Stories, on mobile
Source: Meta, Marketing API, placement targeting, read on 16 October 2026.
MessagingMessenger app
MeMessengerOpening Their Chats
They open their conversations. Your ad can show there as a story or as a sponsored message.
2 placementsfor Messenger in Meta’s reference: sponsored messages and stories, the latter on mobile only
Where Your Ad Appears
- Sponsored messages
- Messenger Stories
Source: Meta, Marketing API, placement targeting, read on 16 October 2026.
MessagingWhatsApp app · Status
WWhatsAppChecking Status Updates
Between two messages, they check their contacts’ status updates. Your ad can appear there, with a button that opens a WhatsApp chat with you.
Statusthe only WhatsApp placement in Meta’s reference, selected together with Instagram Stories
Where Your Ad Appears
Source: Meta, Marketing API, placement targeting, read on 16 October 2026.
Reading And PlayingThreads app · feed
TThreadsFollowing A Discussion
They read the threads of the people they follow. Your ad slots into the feed, like a post.
1 conditionfor the Threads feed according to Meta’s reference: select the Instagram feed as well
Where Your Ad Appears
Source: Meta, Marketing API, placement targeting, read on 16 October 2026.
Reading And PlayingMeta partner apps
ANAudience NetworkPlaying In An App
They finish a level in a game or read in an app. Your ad shows outside Facebook and Instagram, in partner apps.
2 placementsfor Audience Network in Meta’s reference: classic ads and rewarded video, always alongside another platform
Where Your Ad Appears
- Classic ads
- Rewarded video
Source: Meta, Marketing API, placement targeting, read on 16 October 2026.