Beko WMA 520 S Very loud banging noise on spin cycle?

The washing machine was bought on 7th Feb 08 so it is out of its years warranty.

The washing machine has been pulled out and the top removed and then switched on to check for movement/ loose parts, but i couldn't see anything apart from the brick that sits ontop of the drum has started to crumble.

I reduced the spin speed but still made no difference. Does anybody have any ideas as to what it could be? Any help is greatly appreciated!

Thanks in advance.