Thank you for all the information posted on here and the private conversation with Terry with regards to UK customs charges I am today starting the ordering process.
Is there anything else anyone would recommend that should be included with the bike order? E.g. A duplicate charger or an extra battery.
Welcome, Viewlix. Plenty of accessories I can recommend aftermarket*, but as for Leili, make sure they're sending you 5-amp chargers, not something slow. Also, while the light isn't good enough for night riding, it's better than nothing and having them wire it up for you will simplify your upgrade when the time comes. If they'll install a dropper post for you, that saves you having to figure out the internal cable routing yourself. I definitely with I had more batteries. And because fat tire innertubes are getting hard to find, ask Leili to throw in a spare from their stock. I second RMK on the fenders - they're crap and you don't the front at all and don't need the rear if you have the rack.
*Aftermarket recommendations, from above posts include Tannus Armour inserts, Meilan X5 taillight, Rhinowalk 3-in-1 "50L" pannier set (I put 50L in quotes because it actually holds about ¾ that, a bit over 30L), and handlebar horns because this thing goes far enough that you'll want to change grip position for comfort. Cloud 9 saddle; they have a variety of styles but for about $30 I got one with memory foam instead of gel. Dropper post if Leili won't sell you one, or at least a suspension post. Mine is the kindshock exaform 861, not fancy but gets the job done affordably. And of course your choice of mirror for safety and lock for security. And cable ties, because nothing designed to attach to a bike frame will fit this one.
EDIT: A lock won't guarantee your bike doesn't get stolen, so get insurance from Markel. It seems to run about 10% of bike's price, annually.
EDIT again: About thos tire inserts, the fat tire version sells out as soon they re-stock. Go to the site, get on their notification list, and act immediately when you get notified. You want to have the inserts in hand when your bike arrives.
PS: And while I'm on the subject, when the bike arrives, control your enthusiasm. If you don't have a stand, get someone to help hold the bike while you remove the rear wheel (to put the Tannus Armour in) and again when you're ready to put the wheels back on, assuming you don't want scratches on your first ride. In addition to mounting the rack, basket, handlebars, and lights, check every other bolt before you ride it. I threw a bolt off my rear brake because I skipped this step, kinda scary when it happened. Double-press the info button on the display to review the settings