Hi User,
I commute with an Internal Hub Gear bike and if you're commuting is all year around in all weathers then I'd definitely recommend them. I've got the Shimano Alfine 8 on a 2014 Genesis Day One and whilst it's not perfect and it has its idiosyncracies I'd still take it as a preference over derailleur gears for my daily commute. If I didn't have the Alfine 8 I'd consider using either a Sturmey Archer or other brand IGH or maybe even a single speed but I'm getting older and at the end of a long week at work if conditions are miserable then having gears is a bonus. Whilst I'd love to try a Rohloff IGH, which might iron out some of the idisyncracies of other IGH, they are a long way out of my budget.
In respect of commuting everyone has their own personal stuff that works for them whether that's for example using a rack with a pannier or rack top bag or using a rucksack. For me my commuting essentials are having a rack, on top of which I use a rack top bag, mudguards, IGH and more recently having a dynamo hub and dynamo lights. Having upgraded to having a dynamo hub & dynamo lights this has made a huge difference to my autumn/winter commuting and I love the fact that my lights are always ready to go and no longer to I have to worry about charging batteries or USB lights. Just having the lights always on as soon as you ride off is absolutely fantastic and I would highly recommend a dynamo set up on a commuting bike.
Therfore for me becasue my essentials list includes having a rear rack I'd echo the thoughts of Pale Rider above in wanting to double check how easy they'd be for fitting mudguards & a rack to to given the positioning of the seat stays.
If I was looking at buying a commuting bike again although you can retrofit fit most things, such as mudguards and a rack (as long as the bike has the correct braze ons/mounting points), I'd also consider bikes tha come with everything included so that I wouldn't have to add anything later on. If that approach appeals here are some alternative options to consider as food for thought.
Cube Travel SL
https://www.cube.eu/en/2018/bikes/trekking/tour/travel/cube-travel-sl-blacknblack-2018/
The price of the 2018 model seems to be £1,150 per the example link below. But one thing about the Cube that bugs me is that for me personally the mudguards are too short.
https://www.damianharriscycles.co.u...MIlY-a-_iq1wIVTX69Ch2WcAoOEAkYAiABEgIfX_D_BwE
However looking at this link you can get a 2017 version for £879:-
https://www.freeborn.co.uk/cube-tra...MIxMXykvCq1wIVhpO9Ch06JwvPEAkYBiABEgI0QvD_BwE
VSF Bikes
The VSF Fahrrad manufacture T500 which is now available in both the rim, V brake, and disc brake versions:-
https://www.fahrradmanufaktur.de/en/katalog/trekking-2018/t-500-shimano-alfine-8-gang-disc-778
Also from VSF Fahrrad manufacture T500 there is the cheaper T100 but this comes with rim brakes not discs:-
https://www.fahrradmanufaktur.de/en/katalog/trekking-2018/t-100-shimano-nexus-8-gang-790
Regarding the T100 if you look at this link from Chris Bikes, in Cambridge, it cost £649
http://blog.chrisbikes.co.uk/2012/03/vsf-fahrrad-manufaktur-t100.html
Also Chris Bikes had the T500 rim brake version for sale for £899 :-
http://blog.chrisbikes.co.uk/2014/02/vsf-fahrrad-manufaktur-t500-alfine-8.html
Kalkhoff Durban 7
https://www.kalkhoff-bikes.com/en/bikes/2018/bikes/urban/durban-7.html
Ignore the photo of the step through frame on the main picture because it is available as either a step through frame or with a top tube. I only did a quick search for this bike but I could see it for £529 at the link below:-
https://www.edinburghbicycle.com/kalkhoff-durban-7-2018-mens.html
Canyon
For me I probably wouldn't go for a Canyon because I coudln't get it from a LBS but they have some options to consider. However I'm not sure if they'd be for me because the rack and mudguards look a bit bespoke and for example with the racks I'd want to check the weight that they can take and whether the frame has the required mounting points if I wanted to change to a different third party rack:-
https://www.canyon.com/en-gb/urban/urban/#commuter
https://www.canyon.com/en-gb/urban/urban/#urban
The above options are all flat bar bikes and but perhaps you could consider this drop bar bike as a commuter:-
http://www.genesisbikes.co.uk/bikes/urban/urban-and-cross-utility/day-one/day-one-ltd
Focus Planet
If you weren't worried about having the rack and dynamo hub included there's the Focus Planet which is similar to some of the options that you've mentioned.
https://www.jejamescycles.com/focus-planet-lite-8g-hybrid-bike-2017.html
Bombtrack Outlaw
Unfortunately budget would rule this option out for most of us I think but it is a nice looking bike if you want a flat bar bike with an internal gear hub and a gates carbon belt drive. The 2017 model was single speed only but in 2018 they are releasing an Outlaw 2 (althought I don't think that it's on the website yet) which has a Shimano Nexus IGH.
http://bombtrack.com/bikes/outlaw/
http://welovebikes.de/rennraeder/230-bombtrack-outlaw-2-2018.html
http://www.simplebikestore.eu/en/bombtrack-bombtrack-outlaw-2017.html
The only thing is I have absolutely no idea what this bike costs in the UK because they're not widely available in shops over here. However they do have a UK distributor and it depends on where you are in the country but if you liked the bike and happen to live in one of the distributor locations then you could always pop into one of the shops to ask them about the bike & price.
Distributor website:-
https://www.lyon.co.uk/outdoor/bombtrack-uk-stockists
It says that they're available from bike shops in Yorkshire, London, Oxford, Ipswich, Swanage and Worchester.
Best of luck finding the right bike for you and your commute!
John