polygonum wrote:

On 28/10/2012 21:07, Steve Firth wrote:
[snip]

Generally it is easier to replace all four castors than to find an exact
match.

That is what I am beginning to believe.

OTOH if you look here, I think you can see that your mother's furniture
used Shepherd castors, and there's an exact match on this page. Now all
you need to work out is what sort of fitting is needed.

http://www.rosshandling.co.uk/furniture-castors.asp