Never mind Fibre, a jump to ADSL2+ will do!

[#1]

It's one where Sam doesn't know...
http://www.samknows.com/broadband/exchange/EMBELPE

[#2]

Update: Training Complete
Things have been very quiet on the broadband front, with no disconnections or resyncs since my last update.
I did have the PN Profile updated on 25/05 which caused a link drop and a switch to a different gateway (pcl-ag06). The speedtest from here showed a drop to 17.6Mb/s and was resolved by hopping to another gateway (pcl-ag01) and back to 18.24Mb/s.

The router, a Zoom X7n, has performed well since installation and does exactly what it says on the box. Hopefully it will perform as well once IPv6 is introduced by PN 
Here's the stats

Mode:                    ADSL_2plus 
Traffic Type:            ATM 
Status:                  Up 
Link Power State:        L0 
Total Uptime:            5 days, 22:58:13
                      Downstream Upstream 
Line Coding(Trellis):    On         On 
SNR Margin (0.1 dB):     31         67 
Attenuation (0.1 dB):    150        95 
Output Power (0.1 dBm):  0          119 
Attainable Rate (Kbps):  23092      1152 
Rate (Kbps):             21243      1144
  
MSGc:                    51         12
B:                       252        35
M:                       1          1
T:                       3          4
R:                       0          0
S:                       0.3805     1.0
L:                       5318       288
D (interleaver depth):   1          1
Delay (msec):            0.9        0.25
INP (DMT symbol):        0.0        0.0
  
Super Frames:            31637083   636918
Super Frame Errors:      1195       134
RS Words:                0          74705
RS Correctable Errors:   0          0
RS Uncorrectable Errors: 0          0
  
HEC Errors:              5592       159
OCD Errors:              32         0
LCD Errors:              32         0
Total Cells:             4294525327 1385585401
Data Cells:              1085733084 83768108
Bit Errors:              0          9833
  
Total ES:                1154       82 
Total SES:               0          0 
Total UAS:               0          0 

V.pleased 
cheers
Graham

[#3]

Very nice Graham, lucky so&so, except scratch head - I'm surprised at the number or errors. Have you had a thunderstorm in the last 6 days?

[#4]

I suspect this is more to do with the tones/bitloading/bitswapping on my line/connection as there seems to be several tones that are not used due to what I beleive to be radio frequency noise. 
I've attached the bitloading graph from routerstats to show what I mean. The tones and frequencies are below.

Tone - Frq (Khz) 
110  -  474.375
127  -  547.6875
156  -  672.75
188  -  810.75
191  -  823.6875
243  -  1047.9375
291  -  1254.9375
348  -  1500.75

I'm no expert on radio freq's though so maybe clutching at straws 
cheers
Graham