ADSL update
Ten days have passed since my ADSL max was installed so these should be the settings my line can handle:

BT Test XDSLStatusCheckTest:Pass OK. Circuit In Sync BRAS=7150Kb/s FTR=6502Kb/s MSR=8128Kb/s ServOpt=1 I/L=A
Up Sync=448KB/s LoopLoss=8dB SNR=25dB ErrSec=0 HECErr=0 Cells=11030
Down Sync=8128KB/s LoopLoss=16.5dB SNR=12dB ErrSec=0 HECErr=0 Cells=42352

This site says "This period (10 days) is used to determine the best possible speed for your line. Your router or modem will sync with the DSLAM at your telephone exchange and the two devices will send packets of data back and forth. Over the 10 day stabilization period you may experience drops in connection, the connection will also differ in speed, so one day you may get 6.5Mbs throughput and the next 3.5Mbs although the line will settle and stabilize as you near the end of the 10 day period to set a Maximum Stable Rate (MSR) and Fault Threshold Rate (FTR)."

Reading in conjunction with this it looks like I'm near enough the telephone exchange to get a very good line! The sync speed, BRAS and MSR are at the maximum!