A brutal-honest lean path for the mobile programme when there's no cash on the bank to deploy. The full pack assumes £4,735 month-1 startup. That isn't available. Here's what is.
✓ Cash-positive from event 1. ✓ £0-£500 start. ✓ Uses kit you already own.
The Oxydise chamber rental is £585/mo + £150 delivery = £735 in cash to put HBOT in the van. Without it, the mobile programme has no chamber.
Everything else can be done from kit you already own (Tanita MC-580, EMSella sometimes-loaner from clinic, Gemma's clinical authority, Caddy van delivered Tuesday) or for under £300 (print kit + Klaviyo + insurance allocation).
So the question is not "what does it cost to start" — it's "where does the £735 come from for the chamber".
The corporate-paid model is the answer to "no money at the start". Corporate clients pay DGP £1,000-£5,000 per event to deliver an executive wellness day at their HQ. Plus DGP keeps the leads, the consults, and the upsells. Net: the corporate funds the deployment, not DGP.
Pre-sell two corporate days at £1,500 each = £3,000 cash before any chamber arrives. Use that to fund the first month's Oxydise rental and still hold £2,200 buffer.
This is the highest-margin starting point in the whole programme. It also bypasses every weakness of weekend pop-ups: no festival pitch fees, no £30/session commodity pricing, no weather risk, no wasted travel. One corporate day at £2,000 = the equivalent of three weekend pop-up days at £79/session.
Week 1: Hit Oxydise hard. Phone call, not email. Position: "We're launching a multi-chamber mobile programme — need to demonstrate the kit at 4-6 corporate / motorsport / racing pop-ups before committing to a 2-unit purchase." Ask for a 3-month demo unit free of charge with first-refusal on purchase. If Oxydise won't, go direct to the manufacturer (Macy-Pan / OEM) and cut their margin.
Week 1 in parallel: Begin Path 2 — pitch 5 corporate boardroom days via Cooper Parry / IoD / Mattioli Woods warm channels at £1,500-£3,000 each. Take 50% deposits as confirmations.
Week 2: Ideally demo unit confirmed (Path 1) AND 1-2 corporate deposits banked (Path 2). Insurance documentation set up for demo period.
Week 3: Demo chamber delivered. First paid corporate day delivered. Run zero-cost on equipment, full revenue retention.
Week 4-12: Run as many high-margin paid events as you can during demo period. Target: bank £15-25k cash by end of demo. End of demo: negotiate purchase of 2 chambers from position of strength (you've proven the model, supplier wants the close).
Why two chambers, not one: Premium events (Trent Bridge Test, Burghley, Salon Privé) need parallel session capacity. Two chambers = 28 sessions/day instead of 14 = trophy events become break-even instead of loss-leader. Plus second chamber goes with Spencer to a different event same weekend — doubles operator productivity.
If even £735 is hard, here's the absolute lean startup — under £300, all defensible, all you can do this week before any cash flows.
| Item | Cost | Note |
|---|---|---|
| Folding bistro table + portable chairs (Argos / B&Q / second-hand) | £40-80 | Already may own |
| Print kit minimum — 50 leaflets + 100 QR cards (Solopress) | £90 | Brand-aligned, basic |
| Klaviyo email automation (free tier OK for first 250 contacts) | £0 | Already in DGP infrastructure |
| Cloudflare Pages hosting | £0 | Already in DGP infrastructure |
| Cloudflare lead-capture form (Typeform free tier or built-in) | £0 | Already covered |
| iPad — use existing personal one | £0 | Already own |
| Branded scrub top for Spencer (1, embroidered) | £55 | Skip if Spencer wears existing soft-grey shirt + DGP lanyard |
| Lanyards / name badges (10) | £25 | Eye-of-the-beholder professional |
| EFAW first-aid for Spencer (online via St John's) | £65 | Online & valid 3 yrs |
| Petty cash buffer (fuel + food + emergency) | £50 | For first deployment |
| Bare-minimum start | £325-400 | All defensible |
Oxydise chamber (£735), portable concentrator (£800), generator (£1,200), branded gazebo (£450), Spencer Oxydise certification (£450), insurance uplift (£200) = £3,835 deferred. Every single line of these is funded out of operating cash from corporate-paid events 1-4, not out of upfront investment.
Two paid corporate days at £1,500-£3,000 each is the unlock. Here's how to actually book them.
From the existing reports: 5 named warm contacts to lean on first.
| Contact | Org | Why first |
|---|---|---|
| Paul Hooper-Keeley | IoD Derbyshire & Notts (Chair) | Speaker slot pitch — Gemma 30-min talk |
| Cooper Parry | Castle Donington | Co-host MD breakfast event — their client list |
| Mattioli Woods | Leicester HQ | HNW pension client benefit pitch |
| Sheetal Sanghvi | RSM Managing Partner E Mids | Tax-led founder-MD events |
| Marketing Derby Bondholders | Derby city centre network | £750/yr access to 300+ flagship private firms |
Send 5 personalised LinkedIn / email pitches. Subject and body matter.
Realistic conversion: 5 outbound emails → 2-3 calls → 1-2 paid bookings within 7 days. Take 50% deposit on each. £1,500-£3,000 deposit lands in DGP's bank.
Once first £1,500 deposit lands: sign the Oxydise rental contract. Chamber delivered ~7 days later. Use the remaining deposit money to cover absolute-minimum kit purchases. Both paid corporate days then run with full HBOT included — venue + audience already paid for, chamber funded out of their deposit.
If 5 outbound emails to warm contacts produce zero paid bookings in 7 days, the issue is positioning, not the lack of an HBOT chamber. The product sells (or doesn't) before the chamber arrives. That's why Path 2 is recommended — it tests the proposition with the customers who matter, with zero capex risk.
If pre-sales don't convert in 2 weeks, walk back to Path 1 (Mobile DoctoriumGP, no chamber, lower-tier events) and rebuild cash from there. Don't borrow to fund a programme that isn't pre-validated by paying customers.
| Cash event | Amount | Cumulative | What happens |
|---|---|---|---|
| Day 1-7 minimum print kit + EFAW | -£200 | -£200 | Small risk capital from petty cash |
| Day 5 Corp 1 deposit (50% of £1,500) | +£750 | +£550 | Programme green-lit |
| Day 7 Corp 2 deposit (50% of £2,800) | +£1,400 | +£1,950 | Cash buffer healthy |
| Week 2 Oxydise rental + delivery | -£735 | +£1,215 | Chamber on order |
| Week 3 Concentrator + portable kit | -£800 | +£415 | Bought from operating cash |
| Week 4 Corp 1 delivered (balance £750) | +£750 | +£1,165 | First paid event |
| Week 5 Corp 2 delivered (balance £1,400) | +£1,400 | +£2,565 | Cash-positive momentum |
| Spencer day rate (2 days @ £130) | -£260 | +£2,305 | First payroll |
| Pipeline value from 2 events (10-20 leads each) | +£3-5k over 90 days | £5-7k | Funnel kicks in |
Started with £0. Spent £200 from petty cash. Took 2 deposits totalling £2,150. Ran 2 paid events delivering balance of £2,150. Programme cash banked: ~£2,300 after Spencer pay. Pipeline value: £3-5k realising over the next 90 days.
Month 2 onwards is the same model with more events. 4 corporate days/month at the same average = £5,000-£8,000 net cash + pipeline. By Month 3 you've earned the full chamber-purchase outright (£9,000) and can stop renting.