We estimate that UK online ad spend grew by 12.3% this year, with growth concentrated almost exclusively in mobile search and social in-feed advertising (particularly video), and mostly incremental to overall ad spend

Even after payments to publishers and distributors, Google and Facebook captured 80% of all net new spend in the market, and 96% of it flowed through their platforms

Despite improving standardisation and disclosure, the outstanding issues around measurement, the ad-tech supply chain, and particularly the obscure and growing Google/Facebook/Amazon segment, lead us to identify a large portion of digital advertising as a “grey market”: difficult to get a handle on, with uncertain beneficiaries and slippery definitions

Digital advertising in the UK has been a phenomenal success story, but a concentrated one, such that many online media companies have not found a sustainable model

User payments are growing, but are currently focused on large, expensive bundles: Spotify, Netflix, the New York Times. This implements a hard division between free and paid and limits the potential audience

Micropayments and microsubscriptions are alternative models which content owners in certain media can use to address more types of demand. Multiple obstacles remain but for many companies the need to experiment has become critical

BT Group revenue growth dipped to -1.5% from an instance of rare modest positive growth in the previous quarter, albeit mostly due to a predicted price timing effect in Consumer and revenue growth predictably going from bad to worse in Global Services

The bright spots were continued strong 4% revenue growth at EE, with an acceleration in mobile-related revenue also helping other divisions, and strong growth of 5% in external revenues at Openreach driven by accelerating fibre adoption by competitor customers

A number of very important regulatory/policy/legal issues remain unresolved, including 5G spectrum auction rules, leased line pricing, FTTC pricing and FTTP roll-out rules, but without a number of these going BT’s way the outlook remains tough for at least the next 18 months

BT Group revenue returned to growth, at least temporarily, helped by overlapping price rises in consumer, one-off regulated price cuts on leased lines annualising out, and mobile handset sales improving

Regulatory news was unusually positive, with Openreach taking the initiative on FTTP, and BT winning an appeal against damaging leased line regulation, which may end up being significantly eased

BT continues to do well in consumer and struggle in business markets, with the ongoing deceleration in the consumer broadband market the main cloud on the horizon

Amazon’s marketing services bring in a growing stream of direct, high-margin revenue, but their main role is still in supporting vendor partnerships

Amazon uses customer profile data to profit from its own media and that of others, illustrating the value of a direct customer relationship in online advertising

In the future, Amazon’s moves into video content and voice interfaces are likely to significantly expand ad inventory, but maintaining the trust of shoppers is not straightforward

BT had a solid enough quarter, with revenue and EBITDA growth dipping due to pre-warned temporary factors, consumer continuing to outgrow business, and very solid operating trends evident, especially in high speed broadband and mobile

This has of course been entirely overshadowed by the profit warning, with prospective weaknesses in UK public sector and international corporate of far more concern than the contained, albeit surprising, accounting irregularities in Italy

BT has a large share of revenue and a much smaller share of profit from corporate/government data network/IT services, which are erratic in nature and arguably in long term decline in their current form, and without major changes they will continue to be so