Geneva to Liverpool
 

I flew this route with Easy Jet on Tuesday evening dep Geneva 2155

We flew alongside the lake and then turned left, can anyone tell me what the area would have been where the turn was ??

The nearest lake to Liverpool is probably Coniston Water, or perhaps Bala.
I know, coat, hat, ...

Probably going towards Lausanne, depends how early the turn was.

It could only have been Lake Geneva, known locally as Lac Leman SFAIK

I've flown ex Geneva a few times (as pax) and off the N Easterly runway, although it was dark, I'd guess the turn was roughly two thirds of the way to the St Prex VOR, roughly between Nyon & Rolle. On one occasion, judging by the lack of change in the relative position of the moon throughout the flight, we appeared to have a non-deviating heading all the way from the turn over the lake to central London (inbound Luton)
RC