Hotpoint 6.5kg BHWD129

Initially it sounds like a fractured drum spider to me and if so a complete new tank assembly but maybe under 10 year freebee parts warranty and if so use it. BUT common and not so common cock-ups with these things in no particular order of hoplessness are: front weights break/crack or simply come loose – quite common. Top weight comes loose- possible but not that common, drum pulley spoke fracture ( not too common that one ), chassis splits under damper legs ( though that is a ticking noise but very common ), plastic tank splits around bearing tube usually visible near pulley ( had that one a few times ). Typical of any C21st product and that is it is compromised and prematurely fails. So some pointers to check.
To check for a fractured spider arm: each of the 3 drum paddles line up with the 3 spider arms which of course you cannot see. Using your thumbs hold as much as possible through the back of the door seal the plastic tank still ( as the whole plot is on springs ) and with the other fingers push down on the drum at each 3 points or fingers in what order suits you. Any movement in the drum relative to the tank indicates a duffy spider. If the fracture is near the hub, that is the thickest bit, this suggesttion might not work. You`ll just have to pull the bugger out and go over these listed pointers.