Clearly I keep speaking too soon!
The internet has gone from 48mb to 0.08mb - I have restarted the SH1 and Draytek several times, changed quite a few settings to see if its something to do with the config including DNS servers, static ip of the Draytek, even reset the SH and restored from back up..nothing is helping.
I called VM to report the fault, they ran diagnostics including ping and said everything was fine from their end, blaming third party equipment onsite which they don't support (actually got into an argument about it) - how can VM have such a hands-off approach when dealing with business customers?!
The agent I spoke to said they only send out engineers free of charge if there is a fault on the line...£150 if I wanted an engineer to come and tell me they don't support third party equipment.
Any ideas? pretty desperate, thanks!
---------- Post added at 20:22 ---------- Previous post was at 20:06 ----------
Even more confusing, ping and upload are the same as usual but download is virtually zero!