The QE class carrier is rather poor concerning EW
Alas with the lack of catapults the EW is on a helicopter platform with the Crowsnest system. With fixed wing, there would have been the added advantage of extended range and loiter ability. That could still be an option were they to use drones with the requisite ability to be launched and recovered from the carrier, which may be a lower cost option (MOD: drones... let's not mention Watchkeeper)
"Critics will doubtless bemoan that this is not the gold standard E-2D Hawkeye or speculate about non-existent V-22 Osprey-based AEW solutions but this is an affordable and attainable solution, given the RN’s resources.
Meanwhile over in the far east...