The duo take the ninth spot in the list, which includes senior UK-based figures from global agencies and smaller, independent PR shops.
Dhanak and Mackay-Sinclair have been recognised in the list after growing their Mother-backed agency from a confident upstart to an established part of the consumer PR community in a few short years.
The Romans has worked with a host of big names including Diageo, John Lewis, Virgin Trains, Playstation and BrewDog.
The UK Power Book is an extensive list of the most influential and respected comms professionals in the UK today.
The guide, complete with Q&As from each of the nearly 400 entrants, is available online:
The Power Book is also available in the latest print edition of the magazine, which is sent to subscribers this week. PRWeek will be publishing more of the top 10 (and top 20) lists from different sectors over the coming days.
More from the 2019 Power Book: