Thank you to everyone that has replied - much appreciated.
I have to admit that the more I think about this the more I wonder whether I'm making the right choice.
My first aim is imaging, rather than observing. And I'm more likely to be capturing what I'd call astrophotography landscapes.
Big downside of the HEQ5 Pro is the weight.
So I've been challenging myself to look more at mounts that primarily fulfil my photography objectives.
Which has led me to the iOptron Skyguider Pro with iPolar at £579. But then if I add the Williams Optics wedge which seems to be recommended as an 'essential' upgrade, along with a spare battery and two camera cables I'm up at £817. Very close to the price of the HEQ5 Pro.
My head is tending toward this as a better option. It's not a tracking mount you'd rush to add a telescope to (?) but given I'm going to be driving/trekking to locations, and the types of images I want it may well be much better suited to my needs.
Thoughts/guidance much appreciated.....