
Hosted by hub.
David Hunstone, the Co-founder and CEO of Hub, hosts The Growth Engine, a podcast for senior marketeers and leaders within the media and communications industry.
38 episodes · publishes fortnightly · latest 2026-06-25 · ~44 min/episode
Rank
#1044
Substance
72.0
/ 100
Breakdown
Scored 2026-07
Updated monthly
Across the index
#1044 of 6182
Substance
Top 17%
outscores 83% of the index
The Growth-Engine Marketing Podcast ranks #1044 on The B2B Podcast Index with a substance score of 72.0 out of 100, scored across 1 recent episode. It scores highest on guest caliber and specificity & evidence. Leah Martin is a genuine practitioner who built a measurable retail-investor marketing function from scratch and can point to specific outcomes (£45M retail raise, shareholder-register shifts, organic follower growth) as evidence of her work. She is not a C-suite executive or a founder, but she has credibly done the thing at real scale in a niche context most B2B marketers haven't touched.
Averaged across 1 recently scored episode, with cited evidence.
A handful of genuinely operational insights surface - building audience infrastructure before a fundraise, using shareholder-register movement as a proxy attribution signal, and re-prioritising LLM-friendly channels over paywalled press - but they are spread thin across 32 minutes of meandering, filler-heavy conversation. Too much of the runtime is platitude or recapping the obvious.
“we already had had that there and we already had, you know, it was easy for, for me to kind of tweak an ad, um, to, to link back to the fundraise, for example, that we already had the audience kind of ready”
“I could see kind of these platforms that I was driving people to, the retail platforms, moving up the shareholder list. So I could then attribute that to my work”
The observation that paywalled FT/Bloomberg coverage is a poor LLM-training source and that Reddit AMAs and trade publications now outrank prestige media for AI search visibility is a genuinely non-standard take. Everything else - use visual content on Instagram, post daily, try things and kill what doesn't work - is standard marketing orthodoxy.
“they use the trades, they use websites, they use Reddit chats, they use Reddit forums. So things are really pivoting in that direction”
“focus on doing an AMA on Reddit, focus on getting in a trade magazine, that kind of thing because that's where, that is the future of search”
Leah Martin is a genuine practitioner who built a measurable retail-investor marketing function from scratch and can point to specific outcomes (£45M retail raise, shareholder-register shifts, organic follower growth) as evidence of her work. She is not a C-suite executive or a founder, but she has credibly done the thing at real scale in a niche context most B2B marketers haven't touched.
“we raised 45 million from, from retail, which is incredible. Um, it's the biggest retail raise in the UK in the last five years”
“I could then attribute that to my work, what I did”
The episode delivers a solid cluster of named figures - £137M raise, £45M retail tranche, 7,000+ retail investors, £1K/month Meta spend, share price from £1 to £2.50, AJ Bell reaching top-10 on the register - alongside named platforms and channels. It loses marks because many of the numbers are presented without context or methodology, and attribution claims remain loose.
“over 7,000 retail investors got, um, on board”
“we're doing about a grand a month”
The host covers the logical arc of channels, strategy, and outcomes and occasionally surfaces useful follow-ups (e.g. pressing on TikTok vs Instagram conversion rates), but the default mode is warm affirmation rather than interrogation. No claim is challenged, several questions are leading or rhetorical, and the guest's self-congratulatory assertions about attribution go completely unpushed.
“And you'll see they're receptive to that.”
“That's astonishing.”
First period on the Index - history builds from here.
1 scored on substance · 38 tracked in total.
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