| UK QP420/50 listing | Published scope | Our buying instruction |
|---|---|---|
| Listed OneBlade families | QP25xx, QP26xx, QP27xx, QP28xx | Check exact handle and current pack |
| Listed Pro families/models | QP6504, QP653x, QP654x, QP665x | Match full model; do not extrapolate |
| Published exceptions | QP1xxx, QI1xxx, QP652x, QP651x, QP662x, QP6505 | No positive match from this listing; ask Philips |
| Other codes / combs / guards | Not established by this footnote | Unverified: use exact accessory catalogue |
What has actually been verified
The table transcribes the scope of Philips’ UK QP420/50 replacement-blade listing checked on 5 November 2026. It is deliberately tied to one cartridge listing, rather than an invented database of every handle. The page uses broad compatibility language alongside exceptions. We retain the exceptions instead of turning the headline into an unconditional recommendation.
How to read the letters and x characters
A family such as QP27xx represents models sharing that prefix in the manufacturer’s statement. It is not a search instruction to discard the rest of the code. Record the complete handle number and country suffix where shown. A code beginning QI is not automatically equivalent to a similar-looking QP code. If the printed identifier is unreadable, do not make a fit decision from the handle colour.
If your handle is in the exception list
An exception here means this source does not support a positive QP420/50 match. It is not proof that no OneBlade cartridge can fit the handle. Find the official support page for the exact handle and ask Philips to identify the supported replacement part. Avoid forcing a cartridge to attach or relying on an anecdote that it clicked into place: attachment alone does not settle intended performance or accessory clearance.
Blade fit and comb fit are separate
A cartridge statement does not verify adjustable combs, body guards, chargers or third-party accessories. A Pro comb can involve a different attachment route from a short-stubble comb. Match the accessory part number to the exact handle catalogue. If a retailer bundles several accessories into one compatibility claim, request the list for each part rather than assuming every component has the same scope.
Before paying for a multi-pack
Read the current pack code, check the manufacturer source again and compare the delivered cost per cartridge only after compatibility is established. Seller identity and return conditions matter for opened grooming products. We have not purchased or physically fitted these parts. If a newer official model-specific instruction differs from this guide, follow that instruction and send us its source so we can correct the record.