PACE Code A • Reasonable grounds

SHACKS police meaning

Reasonable grounds for suspicion (stop and search). A quick, source-backed reference for the UK policing mnemonic SHACKS.

Short answer

Factors an officer weighs to build and articulate reasonable grounds for suspicion before a s1 PACE / s23 MDA stop and search. Appears verbatim in Ministry of Defence Police stop-and-search lesson plans and the Surrey Police quick guide.

Legal anchor: PACE 1984 s1; PACE Code A paras 2.2-2.11 (reasonable grounds)

SHACKS
PACE 1984 s1; PACE Code A paras 2.2-2.11 (reasonable grounds)
SSeen — what have you seen, including actions/behaviour?
HHeard — what have you heard (conversation, alarms, breaking glass)?
AActions — what you did and what the person did in response
CConversation — what was said to them and what they said; did the reply raise or lower suspicion?
KKnowledge — what is already known (intelligence, time/location, crime hotspot, witness pointing out)
SSmell — any smells giving rise to suspicion (e.g. drugs)

When officers use it

Factors an officer weighs to build and articulate reasonable grounds for suspicion before a s1 PACE / s23 MDA stop and search. Appears verbatim in Ministry of Defence Police stop-and-search lesson plans and the Surrey Police quick guide.

Practical point: the mnemonic is a memory aid, not the test. Decisions still turn on the live facts and the underlying law (PACE 1984 s1; PACE Code A paras 2.2-2.11 (reasonable grounds)) — record your rationale, not just the letters.

Variants and spellings

Surrey renders the first S as 'See' and last as 'Smells'; MDP as 'Seen'/'Smell'. Same six factors.

Why Section includes this

Section is a fast UK police reference app for officers and student officers: offences, points to prove, PACE powers and the standard mnemonics in one offline place. Every entry in the app — including this one — was verified against the sources listed below.

What does SHACKS stand for?

S = Seen, H = Heard, A = Actions, C = Conversation, K = Knowledge, S = Smell.

Is SHACKS a law?

No — it is a memory aid used in UK police training. The underlying framework is PACE 1984 s1; PACE Code A paras 2.2-2.11 (reasonable grounds).

Are there variants of SHACKS?

Surrey renders the first S as 'See' and last as 'Smells'; MDP as 'Seen'/'Smell'. Same six factors.

Sources

GOWISELY — Stop and search — information the officer must give (PACE s2 / Code A) IDCOPPLAN — Arrest necessity criteria ('ID COP PLAN') — PACE s24 / Code G PLAN — Justifying use of force / interference with rights (Human Rights Act)

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