Across:
1 Open (UNBOLT) a foreign (a = UN-) bar (-BOLT) (UNBOLT),
4 One scrum (one scrum = CONSUMER) collapsed (= anagram indicator) and he bought it? (CONSUMER),
9 Confirm (ENSURE) point-to-point (east + north = EN-) is on firm ground (-SURE) (ENSURE),
10 Sporting lady paid out (“sporting lady” without “paid” = sortngly = STRONGLY) solidly (STRONGLY),
12 Where you’ll find all your options (ON THE MENU) in place of the dinner (ON THE MENU),
13 Opens a theologian’s catechism (opens “a theologian’s Catechism” = -ATC-) in church (C-H) (CATCH) and it’s a problem (it’s a CATCH),
14 Guide (COACH-) is a person on site (-BUILDER) (COACHBUILDER) working in the travel business (COACHBUILDER),
18 Whistleblower (COACH-) in (-IN-) Government (-G) has classified information (JOBS in the classified ads) (COACHING JOBS) for those working in the sports authority (COACHING JOBS),
21 Asian city (HANOI) epic taken from Phoenicia (“epic” taken from “Phoenicia” = honia = HANOI),
22 Make worse (AGGRAVATE) with first aid (first “aid” = A-) for horsey type (-GG-) going mad (-RAV-E) nursing a (-A-) temperature (-T-) (AGGRAVATE),
24 A (-A) form of transport for hire (CAB-) in the Seine (Seine) mostly (e) (“Seine” without “e” = SE- -IN) (SEA CABIN) with room on board (SEA CABIN),
25 Dramatist is failing to get mad (“dramatist” is failing to get “mad” = ratist = ARTIST) with one of those responsible for picture (ARTIST),
26 Covering up (DRESSING) for outfit (DRESS-) in (-IN-) Government (-G) (DRESSING),
27 Bank initially (“bank” initially = B-) extends credit (-LENDS) (BLENDS) for mergers (BLENDS).
Down:
1 Take advantage (USE) of (of = FO-) uplifting (= reversal indicator) religion (Roman Catholic = -RC-) and education (-E) (USE FORCE) to get tough (USE FORCE),
2 Champions (BEST TEAM) those playing at the top of their profession (BEST TEAM),
3 Trainee (learner = L-) soldier (sergeant) informally (sarge) loses head (s) (“sarge” without “s” = -ARGE) (LARGE) with major (LARGE),
5 Sheds (OUTBUILDINGS) what’s not popular (OUT-) in the architect’s plans (-BUILDINGS) (OUTBUILDINGS),
6 Sounds like (= homophone indicator) whiskey (“whiskey” = “whisky” = SCOTCH), for example (e.g. = EG-), is good (-G) (SCOTCH EGG) for a picnic (SCOTCH EGG),
7 Mythologist downs tools (“mythologist” downs/without “tools” = mythgi = MIGHTY) – it’s great for the locals (it’s “great” for the locals = it’s MIGHTY),
8 Regiment (R-) in the end (= positional indicator) finds awful (= anagram indicator) myth (myth = YTHM) initially hard (initially “hard” = -H-) (RHYTHM) to beat (RHYTHM),
11 What the whistleblower is capable of (DENUNCIATION) is informing (informing = DENUNCIATION),
15 Looking back (= reversal indicator), slow type (snail = -LI-ANS) goes around general (-G-) office (-O-) to surprise (Oh = HO-) (HOOLIGANS) troublemakers (HOOLIGANS),
16 Spot (LOCATION) line (L-) by Oscar (-O-) from action (action = -CATION) novel (= anagram indicator) (LOCATION),
17 Answer (A-) distress signal (-S-OS) sheltering top (-BEST-) (ASBESTOS) dangerous in-house material (ASBESTOS),
19 Made a play for (CHASED) amateur (-A-) society (-S-) in revolutionary (CH-E-) first drama (first “drama” = -D) (CHASED),
20 ANC leaves in advance (“ANC” leaves “in advance” = idvane = INVADE) of storm (INVADE),
23 Meant to get out of Parliament (“meant” to get out of “Parliament” = parli = APRIL) after march (after March is APRIL).