What seasonality the trade actually has
Three genuine annual rhythms move trade pricing for taxis and PHVs in the UK:
- Year-end fleet retirements (October to January): chauffeur and PHV fleet operators run 4-year vehicle cycles for tax + accounting reasons. The largest single replacement wave arrives in autumn each year. Supply of executive PHV and chauffeur retirees peaks; trade prices for those segments soften by typically 2-4 per cent through the November-December peak before recovering in spring.
- Pre-summer demand pull (April to June): airport-transfer + tourist PHV operators add capacity before the summer holiday season. Demand for clean PHV stock firms; trade prices on retired airport-PHV (Galaxy, Sharan, Vito, E-Class) tend to lift through April-June.
- Plate-renewal cycles (council-specific): individual councils have annual fee structures that create local pulls. TfL PCO licence renewal in particular creates predictable spring + autumn peaks as drivers reach renewal decision points. Local pulls are smaller than the two macro rhythms above.
What does not move with the calendar
Four factors driver search engines often suggest matter but actually do not, in the 2026 UK cab market:
- End-of-month seller psychology. Generalist car-buying sites promote month-end as a 'good time to sell' because dealers reach monthly targets. This rarely applies to specialist cab trade where the buyer pool is structured around vehicle attributes, not monthly volume targets.
- New-plate-month effects (March + September). New UK number plate periods drive new-car sales spikes but barely affect used trade in the licensed-PHV segments because the buyer pool is operators, not private car buyers.
- School-holiday timing. School term-end demand affects family-car retail but does not materially move PHV trade. Airport-PHV demand pulls (above) are the actual seasonal effect that overlaps with summer holidays.
- Calendar-year-end accounting pressure on individual drivers. Specialist buyers do not change offers based on whether a seller mentions they want to close out the year on the sale; the offer is the offer.
What actually matters more than seasonality
For an owner-driver deciding when to sell, four factors move your specific offer far more than the time of year:
- Remaining plate validity. Selling with 24+ months of plate life remaining gets the full licensed-trade premium. Selling with 3-6 months remaining typically drops the offer by 10-20 per cent because the plate value collapses near expiry. The single biggest individual lever, much larger than any seasonal swing.
- Hybrid battery condition (for Prius / Corolla / Ioniq / Niro / TX). A documented Toyota battery health check in green territory adds real value; an unknown battery is priced cautiously. The same vehicle with vs without a recent health check can swing the offer by a meaningful margin.
- Service-history continuity. Full main-dealer service history beats partial; partial beats none. Sell with stamps current and within scheduled intervals; gaps reduce the offer.
- Cosmetic + interior condition. A clean, un-kerbed example trades at the top of its band; a tatty one at the bottom. The 30-minute valet before submission is often the highest-ROI prep time.
If you have a choice between selling now with strong individual factors (full service history, recent battery check, clean condition, plate-time remaining) or waiting 3 months for marginally better seasonal pricing, sell now. The individual factors swing the offer far more than the seasonal averages do.
When seasonal timing genuinely helps
Two specific cases where playing the calendar makes sense:
- You are selling an executive PHV (E-Class, 5 Series, A6, EQE, i4, e-tron) and have flexibility on timing. April-June is genuinely stronger than November-January for these segments because spring chauffeur-fleet demand pulls against thinned supply. The 2-4 per cent seasonal swing is real for executive PHV.
- You are selling an airport-PHV (Galaxy, Sharan, Vito, executive saloon retiree) and have flexibility. April-June pre-summer demand pull lifts the offer materially. November-January softer demand makes that period the worst time for airport-PHV.
When seasonal timing does not help
For most other cab and PHV vehicles, seasonal timing is a wash:
- Hackney trade (LEVC TX, TX4): year-round demand is steady. Owner-driver demand for active hackney stock does not fluctuate enough seasonally to move trade prices materially.
- PCO Prius + Corolla: year-round demand from active PHV operators is steady. Battery health and plate time move the offer far more than the month.
- Pre-Euro-6 diesel PHV: export and out-of-London licensing channels are not seasonal. Offer reflects the channel; seasonality does not enter the calculation.
- Aged-out + scrap-eligible vehicles: scrap pricing is structurally driven by global commodity prices (steel, copper, catalyst metals), not UK seasonality.
The practical takeaway
Most owner-drivers should ignore seasonality and decide on the basis of individual factors. Selling when your plate has time left, your service history is current, your battery is healthy, and your cab is in clean condition will yield a better offer than waiting for a theoretical seasonal optimum and arriving with a degraded position on those individual factors.
The exception is executive PHV and airport-PHV. If you are selling one of those segments and have flexibility on timing, April through June is genuinely stronger than November through January. The 2-4 per cent swing is real. For everyone else, the time-to-sell question is the wrong question; the right question is whether your individual factors are at their strongest right now.
A current specialist trade valuation costs you nothing and tells you what your specific cab is worth today. Compare that against the cost of waiting and decide with real numbers, not seasonal averages.