Here's an old link to the RS site where they have a doc about the change to the stand for the WSD81/WSP80 station. This stand with the classic chrome spring is much more reliable than the earlier stand.
https://docs.rs-online.com/3e22/0900766b80f59568.pdf
I suspect that this safety issue with the earlier type of stand was the reason Farnell sold off their older WSD81+WSP80 stations at about 1/3rd the normal price many years ago. I was lucky to get one before they sold out.
Page 19 of the WSD81 manual below shows the range of irons that are compatible with the WSD81 PSU base. I think the chunky TCP type iron is the 50W LR21 type.
https://docs.rs-online.com/1317/0900766b801a3916.pdf