Is this Robin Day furniture?  

appears so to me. wanna give...
appears so to me. wanna give it to me? love those hillestack chairs...

The chairs are Days but I hav...
The chairs are Days but I have never seen the table before? interesting.

No
I've never seen the desk or table before, but the legs look more like Morris & Co. to me..
although I'd expect Morris to be marked, although I'd also expect a Day table or desk to have the round ivorine Hille plaque

day
again, yes to the chairs, my memory tells me the table legs match the chair legs.
also think the set features in Austerity to Affluence: British Art and Design, 1945-62. STAPLETON, CHAMBERLAIN, RAYNER.

chair yes table unlikely
Hillestack side chair 1950 Beech, plywood with walnut veneer. An example exhibited 'Hille-75 years of British Furniture', Victoria and Albert Museum, London 1981. Published in House and Garden, July 1952, p. 63. The retail price form Liberty's was then 66 shillings. About $5-7.
The table, if it were Robin Day would have the ivorine plaque to the undersideof table top stamped HIlle, London and impressed utility mark. Also exhibited at V&A Museum,1981.
notes taken from Austerity to Affluence, British Art and Design 1945-62. The Fine Art Society, Rayner & Chamberlain 1997 p.20