This data has not produced any good moves for some time, mainly due to Brexit negotiations. However now CPI may be a little more in focus!"Recent History…
Dec 2020 before the Brexit deal was done, a -0.3 produced no move at all.
See Charts here --> Galaxy Calendar 2021 after the Brexit deal, a +0.1 deviation did manage to get a small market reaction.
See Charts here --> Galaxy Calendar Plan …
I think that its worth trading with slippage control of 3 pips on GBPUSD, in the event of a ±0.3 deviation on CPI (YoY), as long as the other CPI lines don’t conflict! If we trigger would hope to see at least 10 pips within the first 1 min.