BT had a weak December quarter, with revenue falling 3% and EBITDA 4%, despite a recovery at Openreach, mainly driven by tough competition and regulatory hits, with operating metrics solid but not noticeably improving.

These hits look set to continue, so the company’s hopes of a return to EBITDA growth in 2020/21 probably hinge on brand and service improvements actually becoming visible in operating performance.

A successful full fibre roll-out would be a boon for BT in the longer term, and regulatory developments are headed in the right direction, if not quite there yet. However, its affordability without a dividend cut remains questionable in the current challenging environment.

The speeds made possible by full fibre build are unnecessary for most users in the short term, giving limited commercial advantage to those that can offer them, but are likely to prove essential in the medium/long term.

The economics of full-scale, independent alternative networks look very challenging in our view – especially without the support of Sky – although there are some limited arbitrage/cherry-picking opportunities.

The Openreach full fibre model makes economic sense under Ofcom’s proposed regulatory framework, provided it retains the lion’s share of the market, although considerable risks remain.