Someone just informed me that at times (UK and US overlap) you can get a 2 pip spread on the GBP at Hotspot FX. Can anyone else verify and are there any other brokers/ECNs that have a similar spread ? The best I have seen at OANDA seems to be 3 and 2.5 for a few minutes.
IB IDEALPro, COESfx and other ECNs, though not all the time. By definition, a given pair spread on an ECN will not be fixed.