Mobile sector returns are low, particularly for smaller-scale operators, with H3G earning less than its cost of capital. Regulatory initiatives, spectrum auctions and 5G look set to worsen this picture as H3G strives to gain viable scale

Back-book pricing is crucial to the returns of fixed challengers. Regulatory intervention is likely to lead to a waterbed effect in the fixed sector and exacerbate challenges in mobile

New entrant business case in full fibre is limited to de facto monopoly opportunities. There is the potential for BT’s returns to increase markedly if it gets full fibre right but new entrants’ inferior economics are unlikely to offer sufficient investor appeal

Sky made a surprisingly weak start to 2019, with revenue growth decelerating to 1.9% (the first time below 4% since the European businesses merged in 2015), due to weaker ARPU trends.

However, Sky expects improvement to follow, blaming one-off factors in the quarter. The ARPU weakness drove EBITDA down 11.3%, but this should bounce back across the rest of 2019 as football rights costs turn from a drag to a positive.

Comcast highlighted collaborations with Sky across tech, advertising, content distribution and even news, stating it is on track to achieve the anticipated $500 million in annual synergies over the next couple of years.