Get the dark-squared bishop outside the pawn chain to f4, build the little pyramid d4–e3–c3, develop naturally, castle, and aim for the e5 square and a kingside build-up. Low memorization, high reliability.
Strengths
Bishop to f4 first — the whole point. In many Queen's Pawn openings this bishop gets buried behind e3; the London develops it before that door closes.
The pawn pyramid (d4, e3, c3) is rock-solid and almost impossible to break down quickly.
The dream is the e5 outpost: a knight or pawn on e5 supported by pieces, fuelling a kingside attack.
It's a 'system,' not a line — you learn ideas and a move-order, then play it against most Black setups.
Watch out for
Don't autopilot: if you ignore ...c5 and ...Qb6 hitting b2 and d4, the 'solid' London can crack. Meet it with c3 and careful development.
Trading the f4-bishop for a black knight too cheaply hands away your best attacking piece.
Playing too passively (no e5 plan, no attack) gives Black easy equality — the London needs an active idea, not just a safe shell.
Learn the moves above, play them from memory, then spar the London System as White against the computer — the moves you miss come back for review until you know them by heart. Want the full ideas, plans and FAQs? See the London System guide.