Free UK Stock Screener: Finding Undervalued LSE Shares by Fair Value
Most stock screeners are built for New York and treat everything else as an appendix. If you invest from the UK, you learn the symptoms fast: FTSE names missing, prices quoted in pence one minute and pounds the next, and per-share figures mangled by currency.
Run the price backwards
Rather than asking what the company is worth, feed in todays price and solve for the growth it assumes. Now you have one checkable claim instead of a number with two decimal places.
What a UK screen needs to get right
- Pence versus pounds. LSE quotes arrive in pence. A screener that does not scale them shows AstraZeneca at 12,834 instead of 128.34, and every ratio built on it inherits the error.
- Filing currency versus listing currency. Plenty of LSE names report in dollars but trade in sterling. Per-share values have to be derived consistently or the P/E is fiction.
- A real fair value, not a label. "Undervalued" should mean a discounted cash flow estimate you can inspect, not a badge.
A screen worth running
On [SteadyShares's Discover screener](/app/screener), which covers 1,100+ names across 17 markets including a full LSE roster, a sensible UK value screen looks like: region UK, minimum moat score 60, maximum P/E 20, minimum DCF upside 15%. Every result shows its fair value estimate, and you can open the Valuation Lab on any stock and change the assumptions yourself, because a fair value you cannot interrogate is just someone's opinion with confidence.
Do the second check
A screen is a list of candidates, not conclusions. Open the ownership tab and see whether any of the 100+ funds we track hold the name, read the filed financials (we pull statements for London listings too, not just SEC filers), and check the analyst range. Then decide.
The screener, the fair values and the UK coverage are free. [Open the free desk](/register), no card needed.
Educational information, not financial advice.
The bottom line
Most free screeners treat London as an afterthought. Here is how to screen LSE shares by DCF fair value, moat and quality, without paying for a terminal.
You can check the numbers behind any company mentioned here on SteadyShares, free and with the screen criteria printed. If the idea is new to you, how to research a company is the place to start.
This is educational information, not financial advice.
Keep exploring: browse the stocks we cover or see what the smart money holds.