ADSL is up to 8Mbps sync. ADSL2 up to 12Mbps, ADSL2+ 24Mbps. But advertised "up to" speeds have to be attained by at least 10% of existing customers.
The + is often missed out by forum users, and may perhaps be by the less savvy ISPs. Basically ADSL2 is not offered at the wholesale level in the UK, so you can be almost certain it doesn't mean that. (It can be configured by many ISPs on problem lines but is not an advertised product).
Those are connection speeds of course, and the actuals vary as explained in most ISPs' blurb. Then throughput/speedtest speed is always lower. By how much and at what time of day is what separates good and cheap ISPs.
Connection - AAISP Home::1 80/20. 200GB. Sync 74145/13476Kbps @ 600m. BQMs - IPv4 & IPv6
Edited by RobertoS (Fri 01-Dec-17 23:29:54)