Design/Reg. No. 826480 was recorded with the U.K. Board of Trade on 23rd February 1938 and allocated to Loewenstein Hecht - and on the 26th of the same month they were allocated a further Reg. No. 826532, though without visiting TNA at Kew I've not the slightest idea what that design was for - hopefully someone else will be able to tell us. Correction - I should look more carefully - the origin is shown on the partial label on the glass.
P.S. The '30s were an active period for Continental imports with U.K. BoT Reg. Nos., particularly those imports from eastern Europe. According to the Glass Association Blue Book, Loewenstein Hecht appear to have Registered eleven designs between March 1932 and February 1938, and like most similar sources, these were likely brought to an end by the advent of W.W. II.
It may be of interest to record the other Registrations:-
771822 - 22.03.1932
790374 - 16.02.1934
801221 - 14.03.1935
808456 - 09.12.1935
808507 - 11.12.1935
809309 - 24.01.1936
817673 - 20.01.1937
819188 - 17.03.1937
820972 - 20.06.1937
Off-hand I've no idea as to the actual designs.