Hi all advice needed, when I'm rolling my bike/ manoeuvring it, it has developed a clunking noise from the rear wheel or chain. Chain is at the correct tension and regularly cleaned and lubed. Any ideas of this noise sound?
Sounds like a stiff link on the chain to me. Do as Smilinjack says and try moving the bike with the chain off.
Personally I would give the chain a thorough lubing with something like 10-40 engine oil and work it in, then leave to stand for 24 hrs before drying off with kitchen tower or similar.