On an iphone i'm not sure i've not used one since the 3GS

i just click wifi hotspot and it works for me i'm on andorid lolipop.

BT Ts&Cs when I was with them specifically disallowed tethering and they do disable it in the iPhone profile. You may be able to technically do it on Android but it is against their contract terms. Section 25a/b of this seems to be clear that tethering is not allowed (even though it may technically work on some devices and it is possible they wouldn't actively monitor for it).

I moved to EE and the hotspot option became available on the iPhone.

So I wonder what will happen when BT take over EE. Will they disable your tethering? I moved from O2 to BT because locally O2 only had 2G while BT has 4G. O2 have now updated their network and I will seriously think about returning to them when my contract is up if BT do not change their stance.

BT now own EE and have done for a few months.

As far as I know, for all intents and purposes, EE will remain as EE. Just like PlusNet remained as PlusNet. Their day to day business functions won't change.

BT statement here essentially saying they will continue with BT, EE and PlusNet with customers able to choose distinct brands and services.

In reply to a post by Zarjaz:

I'm a web designer running a business from home, so it's quite important to get upgraded (even simple things like uploading to Dropbox, FTP'ing is taking stupid amounts of time, not to mention Xcode updates!).

Might it not be worth moving property to somewhere where you can get a speed that suits your needs for the price you are willing to pay ?

Be cheaper than FTTPoD.