An English authority on dictionaries, James Root Hulbert, says that The Concise Oxford is the best for literary use in Britain and Chambers the best  for general British use. 
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(ROOT (S (NP (NP (DT An) (JJ English) (NN authority)) (PP (IN on) (NP (NP (NNS dictionaries)) (, ,) (NP (NNP James) (NNP Root) (NNP Hulbert)) (, ,)))) (VP (VBZ says) (SBAR (IN that) (S (S (NP (DT The) (NNP Concise) (NNP Oxford)) (VP (VBZ is) (NP (NP (DT the) (JJS best)) (PP (IN for) (NP (NP (JJ literary) (NN use)) (PP (IN in) (NP (NNP Britain)))))))) (CC and) (S (NP (NNP Chambers)) (NP (NP (DT the) (JJS best)) (PP (IN for) (NP (JJ general) (JJ British) (NN use)))))))) (. .)))
The consise Oxford dictionary is the best one in all circumstances. 
( ( The ( consise ( Oxford dictionary ) ) ) ( ( is ( ( the ( best one ) ) ( in ( all circumstances ) ) ) ) . ) )
(ROOT (S (NP (DT The) (JJ consise) (NNP Oxford) (NN dictionary)) (VP (VBZ is) (NP (NP (DT the) (JJS best) (NN one)) (PP (IN in) (NP (DT all) (NNS circumstances))))) (. .)))