This was asked some 10 years ago on this forum.
This was the reply on who they are :-
Eifelland belongs to the Knaus Tabbert Group which, in addition to Knaus, Tabbert and Eifelland also includes the lesser known (in the UK) Wilk and Weinsberg marques. That must make it just about the biggest caravan manufacturer on the Continent.
Read more at http://www.practicalcaravan.com/forum/general/133-eifelland-caravans#xoCiA3ttgRlmTO25.99
You could look for retailers of these models in UK or try http://www.knaus.de/ and http://www.knaustabbert.de/ and ask for help via their contact .It looks as if your brand is no longer made , but as parts are very often the same on many brands they will probably be able to help.
Your browser will probably translate the web pages , but send you request in English if you do not speak /write German as they will have english speakers on their staff.
Best of Luck
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