Should you choose this?
Choose online only when your measurements and prescription needs are clear. Choose store support when fitting height, varifocals, prism or strong prescription risk is high.
Cheap glasses
Where to buy a spare pair of prescription glasses online
How to choose a low-risk spare pair of prescription glasses online in the UK, including cheap retailers, frame choices, lens options and delivery checks.
| Option | Typical cost | Choose it for | Risk level |
|---|---|---|---|
| Online order | Lower to medium | Known measurements and straightforward needs | Medium |
| Home trial route | Medium | Frame fit is uncertain | Low to medium |
| High-street optician | Higher | Varifocals, prism, strong prescription or fitting uncertainty | Low |
Choose onlinefamiliar single-vision orders
Choose home trialframe fit uncertainty
Choose opticianfirst varifocals or complex prescription
Editorial reviewReviewed by UK Glasses Guide editorial team.
Source dateChecked on 1 May 2026.
CorrectionsSend a correction if retailer terms, pricing or delivery details have changed.
ImportantInformation only; use an optician for optical or medical advice.
Quick answer
A spare pair is one of the best uses for online glasses, especially when your prescription is simple and you can copy a frame size that already fits.
Affiliate disclosure: Some retailer links on UK Glasses Guide may earn commission at no extra cost to you. We still explain caveats, alternatives and buyer checks before linking out.
Clear buyer intent
This page is written for shoppers who already know the buying problem they need to solve.
Finished basket
Use the delivered price after lenses, coatings, delivery and exclusions.
Complex orders
Use optician or retailer support for strong prescriptions, varifocals or uncertain measurements.
How this page should be used
Start with the buyer problem, then compare prescription suitability, lens options, delivery, returns and support before price. Cheap glasses pages are reviewed as commercial decision pages, so claims should stay cautious, dated and easy to correct.
Retailer shortlist for this topic
This is not a ranking. It is the practical provider lens to use before applying affiliate links or sending a reader to a retailer.
| Provider | Useful for | Buyer check |
|---|---|---|
| SelectSpecs | Low-cost finished baskets and spare-pair comparisons. | Check coatings, delivery and lens thinning before judging the headline frame price. |
| SpeckyFourEyes | Discount-led buying and branded-frame offers. | Apply codes to the finished prescription basket; do not assume every frame or lens upgrade qualifies. |
| Goggles4u | Very low-cost backup-pair searches. | Use stronger caveats around UK delivery, support and complex prescriptions. |
Why spare pairs work well online
A spare pair usually has a clear job: backup at home, travel, work, reading, car use or emergency replacement. Because it is not always the primary pair, buyers can prioritise value without ignoring fit and prescription accuracy.
The safest spare pair copies what already works. Use known frame measurements, a familiar lens type and a simple lens package unless there is a specific reason to upgrade.
What to avoid
Avoid gambling on a dramatic new frame shape for a spare pair if the prescription is strong or the main purpose is reliability. Also avoid unnecessary upgrades that turn a low-risk spare into an expensive experiment.
If the spare pair is for driving, work safety or everyday use, treat it with the same seriousness as the main pair.
Retailer features that help
Look for clear prescription entry, budget frames, transparent delivery, easy support and sensible returns wording. If you already trust a retailer for a main pair, compare whether it is also good value for a spare.
Comparison checklist
| Best frame choice | Similar size and shape to a pair that already fits. |
|---|---|
| Best lens choice | Simple, suitable lens package with coatings only if useful. |
| Best retailer trait | Clear final basket and support if prescription entry goes wrong. |
Practical next step
Use this article as a decision filter, then open the related guides below and compare like-for-like baskets. The most useful order is usually: prescription suitability, frame fit, lens package, delivery, returns, then price.
FAQs
Should a spare pair be identical to my main pair?
It does not have to be identical, but matching the size and lens type reduces risk.
Can I buy a spare pair cheaply online?
Often yes, especially for simple prescriptions and familiar frame sizes.
Should spare glasses have premium coatings?
Only if those coatings solve a real use case. A backup pair can often stay simple.
Are spare prescription sunglasses a good idea?
They can be useful for driving or holidays, but check tint and driving suitability.
What should I keep after ordering?
Save prescription, PD, order summary, delivery terms and support messages.
Information-only note
This page is general buyer information for UK shoppers. It is not medical, optical or prescribing advice. If your prescription is complex, your eyesight has changed, you need children's glasses, or you are unsure about measurements or suitability, speak to a qualified optician before ordering online.