Who made these chairs anyone please?  

The chairs are
by Hugo Frandsen for Børge M Søndergaard møbler 1964

Nice one. Nik.
Nice one. Nik.

Hi Simon, please allow me to...
Hi Simon, please allow me to correct you, Designer is Svend Frandsen, and the manufactory is Hugo Frandsen.

My google search came up...
My google search came up with HUGO FRANDSEN

I am always
ready to be wrong but my information is based on the advert on page 87 of Design from Denmark, where Børge M Søndergaard is listing items pulled in from 4 different sources:
Hjerm møblefabrik
N. M. Borks møbelfabrik
Hugo Frandsen
Bruun & Torntoft.
The paragraph for the chairs reads as "while hugo Frandsen is responsible for the chairs, stool and indispensable trunk-stand"
I know that funitureindex has 1 chair listed as svend Frandsen but as we all know it is not fault free.

.
Hi Simon,
me too I don't claim to be right always and everywhere, if so I would be a fool. 🙂
We just have to realise that there is in fact no superior reference without any doubt, even the funitureindex is sometimes wrong in clear attribution.
So we all know, to err is human, and that's a good thing!
In this particular case I think you are right, it seems to be designed by Hugo Frandsen for Børge Søndergaard.

Thanks guys, I just...
Thanks guys,
I just bought 4 pices of them and did not know more about them than that they are very beautiful and the once I bought are in a very good condition.
I have a Fritz Hansen 3200, so thought at first to be a FH chair, but you helped me a lot with the information. I also learned that they were made in palisander, so am wondering in what kinds of wood they all had been produced.
They are very rare!

Close, but not...
Similar... but not exactly...
"In the dining area, vintage John Kandell oak chairs surround a pedestal table."
Gramercy Park apartment.
"Simply Sublime" produced by Michael Reynolds.
Architectural Digest (August 2012).
http://aflippenlife.blogspot.com/2013/04/dining-with-books.html