Seem to be having some better luck since changing the MTU and the router (again). New technicolor model now, MTU 1458.
Problem is the MTU setting is lost whenever the line drops (can be every 1-2 days)
Any thoughts on where to go next? I'm changing the post office at the moment but the senior support team are very slow to respond to emails and won't communicate any other way.
Post Office ADSL 4mbps