Britain's Ministry of Defence was facing questions after it admitted that British jets were flying in the region of west Mosul where a coalition air strike is feared to have killed more than 100 civilians fleeing Isil.
A spokesman said the RAF was providing "close air support" to ground forces in the city, where on March 17 a US-led air strike destroyed several buildings in the al-Jadidah area.
The MoD refused to confirm whether British jets were directly involved in the strike, but said they had seen "no evidence" of causing civilian deaths.
"As operations to liberate western Mosul and Raqqa intensify, the RAF continues to provide precision close-air support to ground forces engaged in difficult urban combat," the spokesman said.
"We conduct detailed assessments after each strike and review information from organisations such as Airwars and we have not seen evidence that we have been responsible for civilian casualties so far. Through our rigorous targeting processes we will continue to seek to minimise the risk of civilian casualties, but that risk can never be removed entirely."