GBP/JPY edged up on Tuesday, with the Yen under pressure as higher oil prices linked to the US-Iran war raised concerns about Japan’s economy. GBP/JPY traded near 211.60, close to one-week highs.
Markets were cautious ahead of a deadline set by US President Donald Trump for 8:00 p.m. Eastern Time (00:00 GMT on Wednesday). Trump said Iran should “make a deal or open up the Strait of Hormuz”, and warned of strikes on Iran’s energy and civilian infrastructure.
Oil Shock Risks For The Yen
Japan’s status as a net energy importer makes it sensitive to rising oil prices, which can lift the import bill and widen trade deficits. Finance Minister Satsuki Katayama said officials are assessing scenarios for the economy and oil stockpiles, taking account of the Middle East situation.
Higher inflation expectations could keep the Bank of Japan on a gradual tightening path, but energy costs may restrain growth and slow policy normalisation. The UK is also a net energy importer, but with lower exposure than Japan.
With UK growth described as fragile and inflation above the Bank of England target, rates are expected to stay higher for longer, with markets pricing up to two rate rises by year-end. Further GBP/JPY gains may be capped by intervention risk, with USD/JPY near 160.
UK S&P Global Services PMI fell to 50.5 in March from 53.9 in February, below the flash 51.2 and the lowest since April 2025. Composite PMI dropped to 50.3 from 53.7. Japan data due Wednesday include February Labour Cash Earnings and the Current Account (n.s.a.) balance.
The immediate focus for us is the immense event risk surrounding the US-Iran deadline tonight. This geopolitical tension is driving volatility, so we should use options to manage our exposure. Buying call options on GBP/JPY allows participation in a potential upside breakout from an oil shock while strictly defining our maximum loss.
Structuring The Trade With Options
The core of this trade hinges on the yen’s vulnerability to soaring energy prices, which heavily impacts Japan’s trade balance. We saw in 2022 how the invasion of Ukraine sent WTI crude prices jumping over 60% in a matter of months, and a direct conflict in the Strait of Hormuz could be far more severe. This dynamic fundamentally weakens the yen against currencies of nations with less severe energy import dependency.
However, we must be extremely vigilant about intervention risk from Japanese authorities. We remember the Ministry of Finance stepping in forcefully multiple times back in 2024 when the dollar-yen rate pushed past the 160 level. Any rapid, speculative gains in GBP/JPY could trigger a similar defensive action to support the yen, making it a dangerous pair to short outright.
On the pound’s side, the picture is complicated by signs of a slowing domestic economy. The recent March Services PMI data, which fell to 50.5, marked the lowest reading since April of last year, pointing towards stagnation. Despite this, with UK inflation still running above target, the Bank of England is widely expected to maintain higher interest rates.
Therefore, a prudent strategy for the coming weeks could involve establishing a bullish stance through debit call spreads on GBP/JPY. This approach allows us to profit from a rise in the pair driven by interest rate differentials and energy dynamics. By selling a higher-strike call against a purchased call, we can reduce our initial cost and cap our potential gains below levels that might provoke an official response from Japan.
