Well Metabo took EB over. Some of their recent planers are similar/identical, and I've had success in getting what I needed for my SCMS using equivalent Metabo parts.
Metabo themselves (UK) are in the Southampton area. Although they do keep or can source a lot of spares, they only sell spares directly for current or almost-current models (to judge from their web site).
Try Lawson-HIS:
www.lawson-his.co.uk who I used to get bits for the KGS300. They were very helpful, and added the parts to an order from Metabo. It took a while, but I was able to get some ancient, long obsolete accessories that way.
If you can find any other suppliers, it may be worth ringing round as I've found prices vary enormously: some suppliers were 2x the prices of others, but it isn't consistent. Having said that, I can't fault Lawson's for service, and helpfulness though.
HTH,
E.
PS: D+M Tools in Twickenham stock lots of Metabo accessories, but they may not do spares - never asked. They are helpful though.