Big drop in speed, can anyone help

[#1]

Since early last week my broadband speed has dropped a great deal from a steady 250KB/s to 115 KB/s

Statistics are :

DSL Connection
Link Information

Uptime: 0 days, 1:01:04
DSL Type: G.992.5 annex A
Bandwidth (Up/Down) [kbps/kbps]: 448 / 2,272
Data Transferred (Sent/Received) [kB/kB]: 0.00 / 0.00
Output Power (Up/Down) [dBm]: 12.0 / 17.0
Line Attenuation (Up/Down) [dB]: 28.5 / 52.5
SN Margin (Up/Down) [dB]: 17.5 / 14.0
Vendor ID (Local/Remote): TMMB / TSTC
Loss of Framing (Local/Remote): 0 / 0
Loss of Signal (Local/Remote): 0 / 0
Loss of Power (Local/Remote): 0 / 0
Loss of Link (Remote): 0
Error Seconds (Local/Remote): 0 / 0
FEC Errors (Up/Down): 0 / 269
CRC Errors (Up/Down): 0 / 0
HEC Errors (Up/Down): 11,218 / 0
Estimated line speed:
    Not recorded (service activated before we introduced estimates).
Current line speed:
    1 Mb

[#2]

Have you been disconnecting your router constantley at some point during a certain day or through out the week? If so BT probably has set your line to a lower speed thinking your line cannot handle ur normal speed this is what BT conclude when they see series of line disconnection either by the user or the router maybe being faulty.

[#3]

Hello ashrafmiah93
The router is switched off for around 7 hours at night, but on at all other times - this is because I've seen conflicting reports on the issue of speed/router permanent connection and also the possibility of fire risk. But that's been done since getting broadband and there's been no drop before last week. A puzzling thing is that running the BT Speedtest a couple of times has brought the speed up to 350 KB/s temporarily, then kept it at 250 KB/s for nearly a day.