Really nothing too taxing in this one - and nothing to expand on so this is a straightforward list of the solutions with how to get to them from the clues.
| Across | |
|---|---|
| 1 CLIPBOARD - CLIP = magazine (for a gun), BOARD = get on | |
| 6 ARCHAEOLOGIST - (L(ine) TO HEROIC SAGA)* | |
| 13 MOTEL - hidden reversed in littLE TOMmy | |
| 14 REARRANGE - REAR = back, ROW = range | |
| 15 TREASON - T(o), REASON = cause | |
| 16 LEAVE SOMEONE IN THE LURCH - (NOVEL HERO SEEM UNETHICAL)* | |
| 18 CATCHING - C(aught), A, THING = activity, around C(old). Not sure about THING = activity | |
| 20 FLOUNDER - FOUNDER = architect, around L(ake) | |
| 21 ELITE - E(nglish), LITE = simplified | |
| 23 TUBING - TUG = boat, around BIN = scrap | |
| 24 BONNET - B(ought), ON NET = online | |
| 25 STANDPIPE - STAND = tolerate, PIPE = twitter | |
| 28 SEERSUCKER - SEE = get, R(uns), SUCKER = vacuum cleaner | |
| 29 COUP - CUP = trophy, around O(ld) | |
| 30 LIP-READ - LEAD = guidance, IPR = Intellectual Property Rights | |
| 32 CURTAIL - CU = copper, TRIAL* | |
| 34 BEEF - BEE = work meeting, F = forte = loudly | |
| 35 IRONMONGER - IRON = get flat, M(inute), ON = over, GER(man) | |
| 38 ADDRESSEE - DREADS*, SEE = court | |
| 39 LEEWAY - LEE = river (one of several of that name) WAY = channel | |
| 40 MAGNUS - SUNG = chanted, A, M(ass), all reversed | |
| 43 LEMUR - L,R = hands, around EMU = bird | |
| 45 APPENDIX - A = key, P,P = pages, INDEX* | |
| 47 HOLY YEAR - HOLY sounds like wholly = entirely, YEA = certainly, R(ight) | |
| 49 KNIGHTS OF THE ROUND TABLE - double definition, the second cryptic | |
| 52 ARAMAIC - A = note, RAMA = God, I.C. = in charge | |
| 53 ANNEALING - ANNE = woman, (h)EALING = restoring | |
| 54 TWEED - (Augus)T, WEED = unwanted growth | |
| 55 CRYSTAL PALACE - CRYSTAL = clear, PLACE = site, around A | |
| 56 CONTENDER - CON = commit to memory, TENDER = offer | |
| Down | |
| 1 COMPLICIT - COMP(rehensive) = school, LICIT = allowable | |
| 2 INTRACTABLE - IN = at home, TRAC = CART = wagon, reversed, TABLE = furniture | |
| 3 BULGE - (G(ood), BLUE)* | |
| 4 AIRBORNE - AIR = bearing, N.E. = northeast, around B(ritish), O.R. = soldiers | |
| 5 DRAWER - REWARD = prize, reversed | |
| 6 ADRENALINE - A, DR = doctor, ENAL = LANE = prescribed course, IN E(nergy) | |
| 7 CONTINUATION - CON(servative), T(hatcher), I NATION, around U(nited) | |
| 8 AVERTED - A(d)VERT = commercial, ED(itor) | |
| 9 ON THE BREADLINE - double definition | |
| 10 OVERUSE - (d)OVE(r) around ERUS = SURE = certainly, reversed | |
| 11 INSECTICIDE - IN, SECT = extremist group, I(nsist), CIDE(r) = drink | |
| 12 TINT - TIT = bird, around N(ew) | |
| 17 DEFENDER - DEFER = put off, around END = goal | |
| 19 HANDSHAKE - HANDS = men working at farming, HAKE = fish | |
| 22 HONEYBEE - HONEY = ingredient of mead, followed by alternate letters in BrEwEr | |
| 25 SUPERMAN - SUPER(intendent) = police officer, MAN = crew | |
| 26 DIPLOMACY - D.I. = detective inspector, PLOY = clever move around MAC = raincoat | |
| 27 ECCLESIASTICAL - (I CALL ASCETICS E(cstasy))* | |
| 28 SOCIABLE - CIA = agents, B(ook) in SOLE = alone | |
| 31 WELLINGTONIA - WELLING = rising up, (INTO A)* | |
| 33 RUDIMENTARY - R.U. = game, DIARY = forward planer, around MENT = sounds like meant = intended | |
| 36 GINGERBREAD - (BRING AGREED)* | |
| 37 DELIBERATE - DELI = I LED = I was the first, reversed, BERATE = scold | |
| 41 SURRENDER - SURRE(y) = county team, N(oon), DER = RED = embarrassed, reversed | |
| 42 YOUNG GUN - YOU = my solver (from the setter's point of view), N.G. = no good, GUN = something that needs foresight | |
| 44 REGNANT - E.G. = say, NAN = relative, in RT = right | |
| 46 PRO RATA - hidden reversed in (Q)ATAR OR P(akistan) | |
| 48 ZODIAC - (O(=round), CADIZ)* | |
| 50 TITLE - TIE = knot, around T(ons), L(ine) | |
| 51 TALC - IE TALC IS is an anagram of SILICATE | |