Thanks for the replies. Some useful stuff in them for me

.
My SIM was estimated arrival 27 November. Still not here, but I did expect huge demand so not surprised. I may give them a ring if it isn't in today's post.
I done a few speed tbb speed tests with a Three 3-2-1 PAYG SIM in a spare 4G phone (Sony Xperia Z3) I have and getting fairly consistently around 27Mbps/9Mbps on my laptop tethered using wifi. The question will be what congestion ends up like on my mast. I'll be putting this SIM in that initially at least.
I shall probably keep my AA 70/13 sync for a couple of weeks (plus a months notice) and see how things go. Then I have a number of options.
Ditch the FTTC would be the main benefit if I find things acceptable. £35pm.
My heaviest download use would be Netflix single user if I ever get round to using it. So far in nearly three months I've watched parts of the Egyptian Pyramids a couple of times but kept falling asleep in front of the tele!
Then only three or four people ever call legitimately on my landline and I almost never ring out on it. Costs me £14pm. Two or three of the callers I can easily get to change method. The difficult one I expect I could solve by getting them to ring my mobile then ring off without me answering, then I could ring back. The old trick to avoid ppl forking out silly money to ring mobiles.
My mobile is with EE at about £10.51pm. Only 1GB but so far I haven't needed more. Out of minimum term. PAC the number across perhaps.
And from
woodmass's post I seem to have answer to a question I don't want to ask Three yet. Can I put it in a wifi router? I believe I can. But if I do I rule out cancelling the EE contract and also have to buy the router. I've been keeping an eye on the two current threads about 4G routers.
My broadband basic info/help site -
www.robertos.me.uk. Domains, site and mail hosting -
Tsohost.
Connection - AAISP Home::1 80/20. 200GB. Sync 01/10/18 - 72382/13812Kbps @ 600m. BQMs -
IPv4 &
IPv6
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If you never think of anything off the wall, you'll never think of anything original.