Shoulder pads are back and so are Spandau Ballet, a group so synonymous with the flash materialism of the 1980s they could have arrived in an Audi Quattro.

The dress code for their reunion tour – 20 years after they split and 10 since a court battle over royalties – is, sensibly, more father-of-the-bride than “new romantic” gigolo. Kilts are out and cravats are sported by guitarist Gary Kemp and sax man Steve Norman, while singer Tony Hadley fills his slick, dark suit with distinction. Now revelling in middle-aged bonhomie, the five-piece has made the transition to 21st-century “man band” with some aplomb and their dignity intact.

Synths and electric guitars are banned from new album Once More, which re-records their hits in a “contemporary sound” that bears more relation to Strictly Come Dancing than today’s young shavers. Thankfully, they are retained for most of the live show, which wallows unashamedly yet tastefully in celebratory nostalgia. “To Cut a Long Story Short”, “The Freeze” and “Highly Strung” begin proceedings briskly, before the likes of “Round and Round” – accompanied by video from way back when – tug at their constituency’s heartstrings.

Hadley is in rich, resonant voice, though he seems to have acquired an X Factor-ish tendency to milk the big numbers from his own experience on reality television. But his control during the borderline-slushy acoustic interlude is impressive. And the band’s unstuffy enjoyment is infectious. The uptempo trio of “Instinction”, “Communication” and “Lifeline” is the cue – on and off stage – for the sort of boogying you see at a wedding when people can’t remember where they left their wine glass and slurp the nearest to hand. The yuppie funk of “Chant No 1” is almost a rebuff (“We don’t need this pressure on”) to those indie fundamentalists who decry the Spands as “Thatcherism on vinyl”.

As “True” ends the set, 10,000 couples relive their first dance. Hadley draws out the odd syllable, but that doesn’t throw the crowd in baying its version. “Gold”, the ultimate encore, remains absurdly, cornily, covetously an escapist pop classic. Despite countless karaoke renditions, it’s lost none of its value for these grateful fans.

Tour continues until November 1