OR have only been 'In play' for approx. 8yrs. Prior to that, and LLU, it was simply BT and the £120 charge applied for a full install was quite rare. Most installs were classed as 'In situ' and were done for free.
The install fee was £150 and EVERYONE had to pay it - you even had to pay it a second time if you wished to move to another ISP as migration didn't exist. That was 2001. I only remember as I got out of my contract with BT Openworld and got a complete refund of all fees so I didn't have to cough up another £150 when I moved to Nildram. Still had an engineer come out to remove the faceplate when I left Openworld and another one to fit exactly the same faceplate when I joined Nildram.
Guess I'll be doing it myself.
I can confirm it was £150 install and the EU had to pay it regardless of what work the engineer did or didn't do. You got a usb ST330 - more commonly known as the frog.. (Hence the start of my page frogstats and why it still bears that name.)
Adsl was 39.99 pm for 512kbps - there wasnt anything faster for residential users, but they dropped the price to £29.99 pm just before I went live.
Wires only was only in trials in 2002 and iirc was £47 or £50 depending on ISP.
Migration wasn't possible until 2005 ... even then it was only ipstream to ipstream, previously it was a full cease and re provide, along with the relevant new setup costs and a few weeks of downtime.
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There was something in about 2002 where btr was offering cheap installs at a cut price from the £150 in some cases. Btw was wanting to bring down prices for all but were moaning that it was oftel or some regulatory thing causing delays. I recall wanadoo having a hissy cause btr went ahead and slashed prices before bt wholesale did.
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Edited to add
I just tried to google self install to see if I could find an exact date as to when self install came in for all. I didn't find out, but the first result made me laugh cause it was something I wrote in about 2004.
http://www.kitz.co.uk/adsl/selfinstall.htm