Buying guide

Best cheap prescription glasses in the UK: how to compare properly

Cheap glasses are only a good deal if the finished pair still suits your prescription, fit, delivery needs and returns expectations.

Editorial reviewReviewed and updated by the UK Glasses Guide editorial team.
Source dateChecked on 26 April 2026.
CorrectionsSend a correction if retailer terms, pricing or delivery details have changed.
ImportantInformation only; use an optician for medical or fitting advice.

Affiliate disclosure: Some retailer links may earn commission at no extra cost to you. We still compare retailer suitability, caveats and alternatives before linking out.

Checked on 26 April 2026. Retailer information, comparison notes and source links are reviewed for buyer relevance, but prices, codes, delivery times and policies can change without notice.
Buyer situationStart withWhy it may suitWatch out for
Cheapest spare pairSimple prescription route
SelectSpecsSpeckyFourEyes
  • Useful for budget-focused browsing.
  • Compare low-cost frames after lens choices.
Lens upgrades change valueDelivery and returns still matter.
Cheap pair with fit confidenceTry before lenses
Glasses Direct
  • Home trial reduces frame-fit risk.
  • Useful when size or shape is uncertain.
Trial is not final orderPrescription lens costs can change the total.
Cheap designer-style dealBranded frame route
SpeckyFourEyesVision Express
  • Good for branded frame shortlists.
  • Useful when premium styling matters.
Premium lenses add upCheck the total order cost, not the frame price.
Cheap but supportedStore backup route
Specsavers
  • Store support and adjustments.
  • Helpful if online ordering feels uncertain.
Not usually cheapestSupport may be worth the trade-off.
Prescription glasses on a desk

What makes prescription glasses cheap?

The frame price is only one part of the cost. The cheapest finished pair depends on your prescription strength, lens type, coatings, thinning, tint, delivery and whether you need a return or remake. A low frame price can be good value for simple single-vision lenses but less impressive once high-index lenses or varifocals are added.

The basket test

To compare retailers fairly, build the same basket in each place: similar frame material, same prescription, same lens type, same coatings and similar delivery method. Only then compare the final price. This avoids choosing a retailer because of a headline price that does not include what you actually need.

Cheap glasses checklist

  • Check whether standard single-vision lenses are included.
  • Compare the cost of anti-reflection coating, scratch resistance and lens thinning.
  • Confirm the prescription range and whether prism or high prescriptions need approval.
  • Look at delivery timing, not just delivery price.
  • Read the returns policy for prescription glasses specifically.
  • Compare frame measurements with a pair that already fits.

When cheap online glasses make sense

They make the most sense for simple prescriptions, spare pairs, reading glasses, straightforward distance glasses and buyers who already know their frame size. They are more risky when your prescription is complex, your lenses need careful fitting or you are trying varifocals for the first time.

Best overall approach

Use SelectSpecs as a budget benchmark, SpeckyFourEyes for branded frames and reglazing, Glasses Direct if fit confidence matters, and Specsavers or Vision Express when optician support is worth paying for. The best cheap option is the one with the lowest total order cost that still gives you enough support for your prescription and frame fit.

Quick answer

For a simple spare pair, start with SelectSpecs and SpeckyFourEyes, then compare the total order cost against Glasses Direct if fit confidence matters.

Compare all retailers

Cheap glasses routes to compare next

Cheap prescription glasses online

Use this when the search is broad and you need a safer way to compare total basket cost.

Open online cheap guide

Prescription glasses under £20

Use this when a retailer advertises a very low entry price and you need to check what is included.

Open under £20 checklist

Womens prescription glasses

Use this when fit, frame shape and affordable style are the main questions.

Open womens guide

Mens prescription glasses

Use this when frame width, bridge fit and lens thickness are likely to decide value.

Open mens guide

Related reviews

How to use this guide before buying

Use this guide as a practical checklist, not as a final instruction. First, decide whether the order is low risk or fitting sensitive. Then open the relevant retailer review and compare the same basket across at least two retailers. The useful comparison is the full order after prescription lenses, coatings, thinning, delivery, discount terms and returns are included.

For a lower-risk order, such as a familiar single-vision spare pair, the buyer can focus on price, delivery and basic return clarity. For a higher-risk order, such as varifocals, a strong prescription, reglazing valuable frames or prescription sunglasses for driving, the buyer should give more weight to measurement support, lens advice, production expectations and aftercare.

UK Glasses Guide is designed to make those trade-offs visible. Retailer pages explain where each shop may fit, while the guide pages explain the optical and service questions that are easy to miss during checkout. If a retailer page and a guide point in different directions, choose the safer route for your prescription and use case.

Price checkCompare the total order cost with the same lens package and delivery route.
Fit checkConfirm PD, frame measurements, bridge fit and any fitting-height requirement.
Service checkRead production time, return terms, remake process and support route before paying.
Safety checkUse an optician when the prescription, eye health or fitting need is complex.