Why a social media agencies ninety day plan needs fixed review dates

What to take away

The ICO's online safety and data protection guidance sits alongside the UK GDPR, so a ninety day plan should name who checks personal data before publishing.
The Data Protection Act 1998 once set the rules for marketing lists; it has been replaced, so any template quoting it needs updating.
IAB UK's summary of the online ad portfolio shows formats change faster than quarterly plans, so build one format review into the ninety days.
Three fixed review points, at day 30, day 60 and day 90, stop a plan drifting into an open-ended retainer.
Every task needs an owner, a date and a definition of done before the plan starts.

Why ninety days suits agency work

A quarter is long enough to test a content format and short enough to abandon one that fails.

If you are still choosing a supplier, the strategy and planning guide for 2027 sets out how to brief one before you commit to dates.

Set the review dates first

Three fixed review dates

Day 30
checks setup
Day 60
checks early performance
Day 90
decides whether to continue

Each review needs a named decision maker. For example, a marketing manager at a firm paying £2,500 a month needs authority to stop a failing format at day 60 without reopening the contract.

Agree what done means

"Post more often" is not a task. "Publish four short videos a week, each under 60 seconds, reviewed by the brand lead" is.

Write each line as a verb, a quantity and a date. If a task cannot be checked by someone who did not write it, rewrite it until it can.

Data protection before content

The ICO's online safety and data protection guidance explains how platforms and the organisations using them should handle personal data, including in advertising and audience tools.

Before day one, list every place the plan touches personal data: email lists, pixel audiences, comment moderation, influencer contracts. Give each one an owner.

Older templates often cite the Data Protection Act 1998, which has been superseded. Replace those references with current UK GDPR wording.

Formats change within a quarter

Ad formats move quickly. The IAB UK note on the new online ad portfolio is a useful check on what buyers are currently offered.

Put one format review at day 45. If a format is underperforming, the plan should say what replaces it rather than simply cutting it.

Resourcing the ninety days

Decide early who does what. A common split is agency for production, client for approvals and a named person for data queries.

If you prefer to draft the schedule yourself, the planning template in England gives a starting structure you can hand to a supplier.

The ninety day checklist

Use this before the plan starts.

Three review dates agreed and in calendars, with named decision makers.
Every task written as a verb, a quantity and a date.
A definition of done for each task, checkable by a third party.
A list of every personal data touchpoint, each with an owner.
Confirmation that templates no longer cite superseded data protection law.
One format review scheduled at day 45.
A named approver for content and a stated approval turnaround.
A stated rule for what happens if a review date is missed.
Budget split across production, paid support and reporting.
Access to accounts, analytics and ad tools confirmed before day one.

Common questions

Who owns the ninety day plan?

The client owns the outcome and the agency owns delivery. Name one person on each side who can change the plan without a meeting.

What happens at day 90?

Either renew with adjustments, extend for a second quarter with new tests, or stop. Decide this at day 60 so the final weeks are not spent negotiating.

Can the plan cover several platforms?

Yes, but give each platform its own task list and its own review. Shared targets across four platforms usually hide which one is failing.

How much should the plan cost?

There is no fixed figure. For example, a small team might budget £3,000 a quarter for production and £1,000 for paid support, then adjust at day 60.