UK based here as well and I'm not renewing Prime this year.
Apropos fake stuff and fake reviews, I won't buy anything of value from Amazon now, I can't be sure any more that I'm not going to receive a counterfeit. I'm in the market right now for a couple of new electronic gadgets, but I'll just get them from Halfords and PC World, their prices aren't that different from Amazon's.
My other annoyances...
Over the past few months I've noticed their so called "Next Day" delivery randomly isn't really that. For example this week I ordered a thing that was eligible for Prime next day. It was on Tuesday and I was well within the cut off time (by 7 hours or so). Oddly that item then showed as "Get it by Thursday" which is not Next Day. I thought it was specifically that seller or product that perhaps had ran out of stock. But no, every Prime eligible SKU was showing as "Get it by Thursday".
Upon querying this with Amazon they said: "One day delivery starts as soon as the item is marked as dispatched. We will aim to have your item with you in One day."I didn't have the energy to point out that the previous Tuesday all their Prime eligible SKU's were showing as "Get it by Wednesday" i.e actually and really next day.
They seem to vary this throughout the year to suit themselves. I did order the product though and on Wednesday I got notification that the item was dispatched and out for delivery. Sadly it didn't turn up and when I checked the parcel tracking sure enough it'd been bounced back to an expected delivery of Thursday again.
Another annoyance are these "Add On" SKU's (for example cleaning products) where there is simply no way to order these products without spending say a minimum of 20 quid on other stuff. Some marketplace resellers seem to game this by stocking these SKU's but the delivery price is almost as much as the SKU itself. No thanks, I'll just get these from the supermarket next week when I drive into town (I live in a rural area so having stuff delivered makes sense to me).
I also have an ethical problem with the seemingly ridiculous workloads, hours and low pay their delivery drivers have put upon them, I'd rather not fund these abuses. I know for a fact the that the usual fella that delivers to me is doing at least a 10-11 hour day, and that's screwed up.
So anyway, I don't really order enough "new" stuff to make the Prime next day worthwhile, and tbh I can easily wait a couple of days for an order to arrive. I also tend to only order books these days, and will hold out until I can get a decent used copy at a fraction of the new price.
The other thing that's deeply annoying are these add-on channels where you need to pay a monthly subscription for, on top of Prime. Films/TV that you could previously pay for are being silo'd into these channels with no option to just pay for the film itself. Sure I could run with the 10-14 day free trial, but that soon gets old.
Finally there simply isn't enough compelling "included with prime" video that interests me.