There may be a difference compared to values showing in other sources for transaction costs. This is because we are primarily consuming one of the newer specific UK EMT v4.2 fields ‘09010_Financial_Instrument_Transaction_Costs_Ex_Ante_UK’ in the first instance.
Other source may be showing the original field value '07130_Financial_Instrument_Transaction_Costs_Ex_Ante'.
This article is related to Why does the Ongoing Charge data differ to other sources?