I would put key on pos 2 ignition on engine off then put pressure on pedal, the ABS pump *should* cut in, then go round and bleed your brakes. No need to pump pedal, the car does it for you.
Thanks for all the helpful responses everyone! Glad to hear from GVK that my ‘97 ABS Gti doesn’t need adjusting. Been worrying me. Might bleed them again though with ignition on. Cheers!