ExplainedSaaS/ 19 May 2026/ 4 min read
The first 90 days of a new AE in UK SaaS sets the trajectory for the next 18 months. A standard 30-60-90 plan structure that works for IC AE roles at 50-300 person SaaS, what managers most often get wrong (passive onboarding, no deal-walkthrough requirement, late forecast-credibility assessment), and what AEs most often get wrong (over-investment in product, under-investment in role-play).
The first 30, 60, and 90 days of a new AE in a UK SaaS company set the trajectory for the next 18 months. Done well, the AE is generating qualified pipeline by month two and closing by month four. Done poorly, the AE is still in onboarding training in month four and the manager has spent five weeks of unbillable time without a deal to show for it.
A standard 30-60-90 plan structure that works for IC AE roles at 50-300 person UK SaaS:
The objective is fluency. By end of day 30, the AE should be able to:
The week-by-week:
What the AE should NOT do in days 1-30: cold outbound at scale, unsupervised first calls with new prospects, anything competitive against an existing AE's accounts.
The objective is independent execution. By end of day 60, the AE should be:
The week-by-week:
Snapshot
UK B2B outbound channel mix has shifted materially from 2022 to 2026: LinkedIn first, phone returning, cold email lower-volume but more personalised, direct mail seeing a small revival in enterprise. The relative effectiveness ranks have inverted from the 2022 hierarchy.
Explained
Account-based sales (ABS) was promoted heavily across UK SaaS through 2018-2023 as a structural answer to broad-volume outbound. By 2026 the picture is more nuanced: ABS works at specific deal sizes and team scales, fails predictably outside those, and many UK mid-market teams adopted it for the wrong reasons. A practitioner walkthrough.
Explained
UK enterprise buyers in 2026 increasingly run ESG due diligence on vendors as part of procurement: documented sustainability commitments, modern-slavery statement, supply-chain transparency, and (depending on the buyer) climate-disclosure alignment. The UK Sustainability Disclosure Standards regime has tightened the buyer-side disclosure obligations, which cascades down to vendor expectations.
What the AE should be doing by end of day 60: their own forecast call participation, their own discovery, their own demos, their own outreach. Manager involvement should be coaching, not driving.
The objective is the start of meaningful attainment. By end of day 90, the AE should:
The week-by-week:
What you assess at day 90: pipeline coverage, MEDDPICC quality of the top 5 deals, win rate from first meeting to qualified opportunity, documented territory plan.
Three patterns:
Two patterns:
Should be a one-page document, written by the manager, signed by the AE on day 1. Specific outcomes by day for each milestone. Quarterly review against the document. The document is the contract.
This is editorial coverage of public sales-onboarding methodology. For specific advice on onboarding at your company, talk to your sales leadership.