10 Spat in auditorium brought about further application of tracking device (5)

11 Quick on Trigger? He was doubly so (3,6)

12 Last house on left when only four remain standing? (9)

13 Antigua notably hosts production of 'The Seagull' (5)

14 Case involving spoiled vote settled a score (3,4)

16 Inspiring compiler's getting a round in? It's not unknown (7)

18 Counters Sierra's further attempts to pass on the outside (7)

20 Confronts rumours about retired barrister (7)

22 Dicky Mandela (no relation) is horny African (5)

24 Drives off jerk with influence over associate (5,4)

26 Italian novelist's special present that's life-supporting (9)

27 Lover's right out of protection (5)

28 Chess player's big game that's inconvenient but hard to shift (5,8)

 2  Have a go at finishing off flat, bringing in casual labour (7)

 3  Slap-up celebrations! (4,5)

 4  Allegedly violinist from Rome (50) knocked up old actress (5)

 5  Maybe Prince Harry's brand-new establishment making change ... (5,4)

 6  ... in the midst of antagonistic machinations of newspaper group leaders (5)

 7  Each half might have unpredictable outcome for visiting team from Orient (3,4)

 8  Malvolio appeared so grumpy with great red wound ... (5-8)

 9  ... seeing that setter's weapon is far-reaching (2,4,2,2,3)

15 Price acted occasionally in supporting bill as minder for 'Schnozzle' (9)

17 Regressive character favours corporal punishment (9)

19 Aquatic creature that's a surprise in Dundee's narrow inlet (3,4)

21 Whispered sad information (3-4)

23 Senior newspaper boss chucked up in garage (5)

25 Loyal subject, say, detected in falsehood (5)