seeking advice choosing sub £1k very gutsy climber in Dutch style

[RobF]

It's a shame but here are the Dutch making the most ergonomic bikes in the world and they're heavy as ****,no good for our British hills (without a bpm). If anyone discovers a lightweight step through, let me know. I think it may not exist.

Frame integrity is a problem.

The absence of a crossbar means beefier tubes have to be used elsewhere.

Thus 'light weight' and 'step through' are mutually exclusive.

 

[trex]

The Ezee Sprint Primo fulfils all the OP's crieria.

http://www.cyclezee.com/ezee-sprint-primo.html

 

[Kudoscycles]

My Kudos City and Liberty e-bikes are still the style chosen by most Dutch riders despite the style remains unchanged for some years.
Maybe it's a compliment to us that we are pushing the type to suit our needs ,despite our small volumes.
My Kudos Sonata is a very high spec bike with hydraulic brakes and our BPM hi-torque motor,but maybe dearer than the OP wants to spend,it is very gutsy and step thru style.
KudosDave

 

[acm2000]

Woosh Santana CD, Woosh Big Bear LS, or Kudos Liberty

Santana the only real option if you want chain drive otherwise it's a choice of the other two.

Find the nearest showroom for both makes and go try them, these bikes are too expensive to buy without testing first.