What Is the London Open Strategy in Forex Trading?

The London session opens at 08:00 UK time and overlaps with the tail end of the Asian session before later overlapping with New York in the afternoon. The London open specifically marks the point where European desks come online and begin acting on positioning built up, or news released, since the Asian session closed.

This is why the hours immediately around 08:00 UK time typically show a visible increase in range and volume compared with the Asian session that preceded them, particularly on pairs involving the euro, pound, and other European currencies that see the bulk of their liquidity during London hours.

During the Asian session, many forex pairs trade in a comparatively narrow range as liquidity is thinner and fewer large participants are active. This range — the Asian high and low — becomes a reference level that London-session traders watch closely.

A common pattern is for price to push briefly beyond one side of the Asian range shortly after the London open, triggering stop orders resting just beyond that level, before reversing back through the range and continuing in the opposite direction. This is sometimes described as a liquidity sweep: the brief push beyond the range clears out resting orders before the larger move develops in the other direction. It does not happen every day, and treating it as an automatic pattern rather than one possible outcome among several is a common mistake.

Spreads on major forex pairs are typically at their tightest during the London-New York overlap, and they generally tighten further as London opens compared with the wider spreads that can prevail during the quieter Asian hours. This makes the London open a comparatively favourable time to execute, from a cost perspective, relative to trading the same pair overnight.

That said, the first few minutes after 08:00 can see brief spikes in volatility as resting orders are triggered and desks reposition, which can produce wider spreads and faster price movement than the calmer minutes that follow. Traders using this strategy generally wait for the first five to fifteen minutes of London trading to pass before entering, rather than trying to catch the very first tick, to let the initial volatility spike settle before committing to a direction.

A typical approach marks the Asian session's high and low before the London open, then watches for either a decisive break and hold beyond one side of that range, or a sweep beyond one side followed by a reversal back through it. The entry is placed on confirmation of whichever pattern developed, not in anticipation of it, since guessing which of the two will occur on a given day is unreliable.

Stop placement typically sits on the far side of the Asian range from the entry, since a return through the entire range would invalidate the premise of the trade. Because the setup depends on a specific short window of the day, it produces at most one or two trade opportunities per session, which suits traders who prefer a small number of higher-conviction setups over continuous scanning.