STOCK WATCH

CONFERENCE call service provider Loop Up plunged 31.5pc, or 25.9p, to 56.6p after it warned it might lose more customers than normal in the first six months of this year.

There were disruptions for some users who were moved from a platform provided by Meeting Zone, which it bought in 2018, to its own service.

This could lead to ‘higher than normal churn issues’.

It also said US customers used its software for 8pc fewer minutes on average in the second half.