>> ALL services should be required to send end-of-contract reminders
IMHO it wouldn't be so much of an issue if the price didn't substantially increase when your contract does.
I dislike the "New customer only" discounts where customer loyalty stands for nothing. I also hate haggling and spending hours comparing products (The compare market sites dont give a full picture). If , then you should still get a decent deal without something is good and you are happy where you are... rather than spend hours looking at t&c's and small print.
It's a topsy turvy world - new customers are loss leader products with little or no profit. They incur migration or new connection fees to Openreach, new hardware (modem router and whatever else they offer). They require more support time from CS. (eg setting up new equip, have more queries and may have transerred "
to get better wi-fi" !! 
>> is just to maintain competition in the market.
Thats what it likes to think. I'm not so sure. We've ended up with a handful of big boys who dominate the market because of their ability to offset practically zero-profit pricing during the initial period. There used to be a heck of a lot more choice and some very good ISPs, but who cant afford to compete at such low cost. The standard "compare" sites dont really help as they only list the big boy ISPs who pay them some quite generous commissions. :/
