Across
Group's leader made strong criminal in area where they thrive? (11)
Academic figure leading exploit of a lavish sort (7)
Cover with hard material enclosure getting sign of corrosion (7)
Energy shown by six before start of marathon (3)
Impose two directions with group of police (7)
Wayward flipping sailor defended by Ernie's partner (7)
With no end of frustration, search for shack (3)
Delicate viewer's requirement? (5)
Old woman in front of sturdy principal pipe (5)
Empty chap's complaints (5)
Rounded swelling in brass instrument after slight adjustment (5)
Offer in British papers (3)
Let down fellow in lead possibly with those being discontented (7)
Beasts of burden unhappily carrying limited container (7)
Edge shown by major route and river in turn (3)
Woollen rug accepted in apartment linked to institute (7)
Rescue service kept within measure of distance in extraordinary event (7)
A new thicker liquid in pots, pans etc (11)
Down
Take ill-considered action and leave a drink set up around end of summit (2,3,2,4,4)
Pale grey person not taking sides (7)
Strain is raised by first woman (5)
Copper, maybe, with a line that's rudimentary (9)
Propriety of French firm with drink (7)
Uni MC noticeably designed something used in rugged terrain (8,7)
Delivery address (6)
Conventional small goods (6)
Turn up large book on redeveloped shire? It's nonsense (9)
Make minor changes to way of working if in extremes of difficulty (6)
Inclination to accept each builder's material? (7)
Marie is disorientated going round post office and large retail stores (7)
Remove inspector over short period (6)
A chap hoarding money in Middle East capital (5)
Type letters or click words in the clue