Haspel was the station chief in London for a while, but she not there during the period of time you're referring to.
No doubt she's familiar with all the British actors in the failed soft-coup, but her direct involvement has not been established.
If Haspel is a bad apple then by proxy so is Pompeo, who pushed for her promotion to CIA Director.
I only -barely- trust Pompeo. And say what we will about proving her involvement. She has zone ZERO to clean house. There is no public support for Trump policies, there have been no arrests of CIA plotters. She is slow walking the declassification and resisting it.
That’s proof of guilt.