53 minutes for me, with five of those spent on the unknown revloutionary chap. A little bit of everything here: Greek, British slang, British toff-speak, British northern towns, misenumeration from the good folk at The Times, with not a bit of cricket in sight. Unless I've missed it. I usually do.
Across
1 NUTMEG - The NUT (National Union of The-underpaid) is in front of M[ale], with EG ('say') taking up the rear.
5 PASSER-BY - PASS+ER+BY; 'by', as in 'I put it by/aside for a rainy day'.
9 KING-SIZE - KINGS + Z in I[ts] E[ducation].
10 TWEEDY - T[oo] + WEEDY for country types like Dorset Jimbo...
11 FELLOE - ODO has it only in the plural, but not Collins, which gives: 'a segment or the whole rim of a wooden wheel to which the spokes are attached and onto which a metal tyre is usually shrunk'. All Greek to me, even if it sounds like it ought to be a crossword regular.
12 TROMBONE - cryptic definition; 'Principal trombone' refers to the player not the instrument.
14 POP ONE'S CLOGS - beats 'kick the bucket', 'shuffle off one's mortal coil', etc. any day. MY COD. Anagram* of CLOSE SONG preceded by POP [music]. According to the Guardian, the expression may have its origin in clog as 'a block or heavy piece of wood, attached to the leg or neck of a man or beast, to impede motion and prevent escape', so that by popping one's clogs, he is escaping the burdens of life.
17 TWILIGHT ZONE - TWILIGHT + [o]ZONE [less 'none' = with no O]; not a contender for Clue of the Year.
20 WELSHMAN - [scanda]L + NEWHAMS* to give the leak-eater ('National').
22 LAPDOG - it couldn't be 'copdon' so had to be PD + O in LAG.
23 RINGER - triple definition; we have the bloke (or bird - mustn't be sexist) in the silly hat ringing his bell and shouting 'Oyez, oyez', the lookalike ('He's a dead ringer for x') and the person who wishes to 'ring the changes'.
25 REGIONAL - I was hoping for an allusion to 20 to give 'Turk' or 'Jack', but sadly it's only NO + I in LAGER all reversed.
26 EGGS+HE+LL - not sure how many times I've forgotten this, but 'eggshell china/porcelain' is 'a type of very thin translucent porcelain originally made in China'.
27 TIFFIN - TIFF + IN ('during') for a light repast enjoyed in India and by tweedy types in Dorsetshire.
Down
2 UNISEX - the outside letters of S[trang]E in 'a multitasking, multi-user computer operating system that exists in many variants' (UNIX), which I'm proud to say I'd never heard of. It's a strange but true fact that unisex lavatories are only found in dodgy nightclubs (so I'm told) and on aeroplanes. Make them half-and-half and the women would be queuing back to the cockpit...
3 MEGALOPOLIS - GALOP (a dance) + O ('round') in MILES* to give an ugly word for an ugly concept ('an urban complex, usually comprising several large towns'); I bet Stoke-on-Trent never called itself one.
4 GUINEA PIG (6,3) not (7,3) as given in the Times Crossword Club - GUINEA + PIG (mass of metal) giving 'first to use'.
5 PRESTON - I was wanting this to be POTSDAM , for which I began thinking up some pretty creative clues; sadly, it turned out to be only the town besides the M6 best known for the great Sir Tom Finney and its plastic pitch.
6 SET-TO - SET + OT reversed for a conflict verbal, physical or both.
7 EYE - sounds like AYE; another that won't be troubling the list of all-time greats.
8 BADINAGE - BAD+I+NAG+E for a bit of banter; I'm not sure how 'I caught' can indicate an enclosure or envelope of NAG, as surely you would need a word with more than one letter to do that job. Maybe I am missing something. Thanks to Zabadak for pointing out that the I is 'caught' by BAD NAG.
13 BULLETPROOF - another cryptic definition, where 'like a shot!' is deflecting attention from the literal by suggesting that the solution will by an adverb ending in '-ly'. Maybe.
15 SPOTLIGHT - POT in SLIGHT.
16 S+WEEEPING
18 TENDRIL - 'shoot' as so often in Crosswordland refers to new vegetable growth; TEN + R[ooks] in LID ('hat') reversed.
19 SOMALI - SO + MALI[gned].
21 MERGE - G[ang] in MERE.
24 GAS - double definition.
Across
1 NUTMEG - The NUT (National Union of The-underpaid) is in front of M[ale], with EG ('say') taking up the rear.
5 PASSER-BY - PASS+ER+BY; 'by', as in 'I put it by/aside for a rainy day'.
9 KING-SIZE - KINGS + Z in I[ts] E[ducation].
10 TWEEDY - T[oo] + WEEDY for country types like Dorset Jimbo...
11 FELLOE - ODO has it only in the plural, but not Collins, which gives: 'a segment or the whole rim of a wooden wheel to which the spokes are attached and onto which a metal tyre is usually shrunk'. All Greek to me, even if it sounds like it ought to be a crossword regular.
12 TROMBONE - cryptic definition; 'Principal trombone' refers to the player not the instrument.
14 POP ONE'S CLOGS - beats 'kick the bucket', 'shuffle off one's mortal coil', etc. any day. MY COD. Anagram* of CLOSE SONG preceded by POP [music]. According to the Guardian, the expression may have its origin in clog as 'a block or heavy piece of wood, attached to the leg or neck of a man or beast, to impede motion and prevent escape', so that by popping one's clogs, he is escaping the burdens of life.
17 TWILIGHT ZONE - TWILIGHT + [o]ZONE [less 'none' = with no O]; not a contender for Clue of the Year.
20 WELSHMAN - [scanda]L + NEWHAMS* to give the leak-eater ('National').
22 LAPDOG - it couldn't be 'copdon' so had to be PD + O in LAG.
23 RINGER - triple definition; we have the bloke (or bird - mustn't be sexist) in the silly hat ringing his bell and shouting 'Oyez, oyez', the lookalike ('He's a dead ringer for x') and the person who wishes to 'ring the changes'.
25 REGIONAL - I was hoping for an allusion to 20 to give 'Turk' or 'Jack', but sadly it's only NO + I in LAGER all reversed.
26 EGGS+HE+LL - not sure how many times I've forgotten this, but 'eggshell china/porcelain' is 'a type of very thin translucent porcelain originally made in China'.
27 TIFFIN - TIFF + IN ('during') for a light repast enjoyed in India and by tweedy types in Dorsetshire.
Down
2 UNISEX - the outside letters of S[trang]E in 'a multitasking, multi-user computer operating system that exists in many variants' (UNIX), which I'm proud to say I'd never heard of. It's a strange but true fact that unisex lavatories are only found in dodgy nightclubs (so I'm told) and on aeroplanes. Make them half-and-half and the women would be queuing back to the cockpit...
3 MEGALOPOLIS - GALOP (a dance) + O ('round') in MILES* to give an ugly word for an ugly concept ('an urban complex, usually comprising several large towns'); I bet Stoke-on-Trent never called itself one.
4 GUINEA PIG (6,3) not (7,3) as given in the Times Crossword Club - GUINEA + PIG (mass of metal) giving 'first to use'.
5 PRESTON - I was wanting this to be POTSDAM , for which I began thinking up some pretty creative clues; sadly, it turned out to be only the town besides the M6 best known for the great Sir Tom Finney and its plastic pitch.
6 SET-TO - SET + OT reversed for a conflict verbal, physical or both.
7 EYE - sounds like AYE; another that won't be troubling the list of all-time greats.
8 BADINAGE - BAD+I+NAG+E for a bit of banter; I'm not sure how 'I caught' can indicate an enclosure or envelope of NAG, as surely you would need a word with more than one letter to do that job. Maybe I am missing something. Thanks to Zabadak for pointing out that the I is 'caught' by BAD NAG.
13 BULLETPROOF - another cryptic definition, where 'like a shot!' is deflecting attention from the literal by suggesting that the solution will by an adverb ending in '-ly'. Maybe.
15 SPOTLIGHT - POT in SLIGHT.
16 S+WEEEPING
18 TENDRIL - 'shoot' as so often in Crosswordland refers to new vegetable growth; TEN + R[ooks] in LID ('hat') reversed.
19 SOMALI - SO + MALI[gned].
21 MERGE - G[ang] in MERE.
24 GAS - double definition.