It is very likely that the bearings have failed. I have had a hotpoint wma33 fail at 23 months and had hotpoint fix it...
This is not an easy task to undertake on your own I spent a while looking into this.
If you have warranty (machine is less than 1 year old) or paid for extended cover then call hotpoint to replace... (They will do the whole drum its quicker). This should be free.
If you don't have warranty (your machine is older than 1 year) then still call Hotpoint - you will be charged £90 callout but parts are free for machines less than 5 years old. This is what I recommend.
or - do it yourself ( NOT RECOMMENDED)
I know two people who have purchased the bearings and spider kits - and wasted about 3 days because these things are really awkward to remove and refit. They both swear that £90 is a bargin after buying the spider and bearing see:
http://www.4hotpoint.co.uk/cgi-bin/product.pl?PID=954798&brand=&model=wma33&part=spider
This spider costs 61.25 + delivery - ouch.
As hotpoint will fit half a drum or full drum (Depending on what is on the van for £90) the actual cost of a half drum is 75.99 + delivery see:
http://www.4hotpoint.co.uk/cgi-bin/product.pl?PID=639770&brand=&model=wma33&part=drum
and a full drum costs 176.96 + delivery
see:
http://www.4hotpoint.co.uk/cgi-bin/product.pl?PID=639763&brand=&model=wma33&part=drum
They take away all the rubbish at the end also!
I hope this helps
Please dont forget to rate me as a fixya.