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UK Mid-Caps

FTSE 250 territory — big enough to matter, small enough to be overlooked.

Below the blue chips sits the domestic heart of the London market: companies large enough to be established businesses but followed by a fraction of the analysts. This collection covers LSE-listed companies between roughly $0.9bn and $8bn. Note: it is a market-cap band, not the FTSE 250 itself — the payload carries no index membership, so a handful of FTSE 100 names sit at the top of the range and the smallest FTSE 250 constituents fall below it.

176 stocksSorted by market capUpdated 7 Oct 2026

Why it matters

FTSE 250 territory — big enough to matter, small enough to be overlooked. Benchmark collections are a clean way to compare market leaders, index heavyweights and size segments without building a screen from scratch.

What to check next

Compare sector mix, valuation, quality and risk across the group rather than assuming larger companies are automatically safer.

Main risk

This is a proxy screen, so treat the result as a starting point. Large benchmark names can become crowded, expensive or overly exposed to one macro factor despite appearing diversified at first glance.

Showing the 40 largest of 176 — sort or filter to explore the rest.

Company	Market Cap	Reward	Risk	Yield
Investec plcINVR	£5.9B	38	34	5.6%
Metlen Energy & Metals PLCMTLN	£5.9B	49	58	2.0%
Hiscox LtdHSX	£5.9B	58	39	2.9%
Melrose Industries PLCMRO	£5.9B	57	59	1.6%
Lion Finance Group PLCBGEO	£5.7B	78	50	0.0%
Games Workshop Group PLCGAW	£5.7B	56	27	2.9%
Computacenter PLCCCC	£5.7B	62	37	1.4%
DCC plcDCC	£5.5B	45	42	3.4%
Kingfisher PLCKGF	£5.4B	58	45	3.8%
Spirax Group plcSPX	£5.3B	51	43	2.4%
Land Securities Group PLCLAND	£5.1B	42	53	6.8%
EasyJet PLCEZJ	£5.1B	74	57	1.9%
Seplat Petroleum Development Company PLCSEPL	£4.7B	74	40	2.5%
Croda International PLCCRDA	£4.6B	48	46	3.4%
Ithaca Energy PLCITH	£4.5B	53	49	0.1%
Babcock International Group PLCBAB	£4.5B	54	52	0.8%
Balfour Beatty plcBBY	£4.4B	61	30	1.6%
Barratt Redrow plcBTRW	£4.4B	46	56	1.9%
Renishaw PLCRSW	£4.3B	70	30	1.4%
Eutelsat GroupETL	£4.2B	42	42	—
LondonMetric Property PlcLMP	£4.2B	58	49	7.3%
ConvaTec Group PLCCTEC	£4.2B	57	41	3.5%
Tritax Big Box REIT plcBBOX	£4.1B	57	45	5.8%
Howden Joinery Group PlcHWDN	£4.1B	52	45	2.9%
Whitbread PLCWTB	£4.1B	35	61	4.1%
Harbour Energy PLCHBR	£4.0B	65	45	5.8%
WPP PLCWPP	£4.0B	46	59	3.9%
Softcat plcSCT	£4.0B	63	45	1.6%
British Land Company PLCBLND	£4.0B	52	54	6.1%
Glanbia plcGLB	£4.0B	46	43	2.9%
Rotork PLCROR	£4.0B	69	45	1.7%
Persimmon PLCPSN	£4.0B	46	49	4.8%
Zegona Communications PlcZEG	£4.0B	71	62	0.0%
JD Sports Fashion PLCJD	£3.8B	67	56	1.6%
Burberry Group PLCBRBY	£3.6B	43	48	—
Auto Trader Group plcAUTO	£3.5B	55	45	2.5%
RS GROUP PLCRS1	£3.5B	56	39	3.0%
Mondi PLCMNDI	£3.5B	47	55	1.8%
Frasers Group PLCFRAS	£3.4B	52	53	—
Rightmove PLCRMV	£3.3B	60	45	2.4%

Investec plcINVR · £5.9B
Reward38Risk34Yield5.6%
Metlen Energy & Metals PLCMTLN · £5.9B
Reward49Risk58Yield2.0%
Hiscox LtdHSX · £5.9B
Reward58Risk39Yield2.9%
Melrose Industries PLCMRO · £5.9B
Reward57Risk59Yield1.6%
Lion Finance Group PLCBGEO · £5.7B
Reward78Risk50Yield0.0%
Games Workshop Group PLCGAW · £5.7B
Reward56Risk27Yield2.9%
Computacenter PLCCCC · £5.7B
Reward62Risk37Yield1.4%
DCC plcDCC · £5.5B
Reward45Risk42Yield3.4%
Kingfisher PLCKGF · £5.4B
Reward58Risk45Yield3.8%
Spirax Group plcSPX · £5.3B
Reward51Risk43Yield2.4%
Land Securities Group PLCLAND · £5.1B
Reward42Risk53Yield6.8%
EasyJet PLCEZJ · £5.1B
Reward74Risk57Yield1.9%
Seplat Petroleum Development Company PLCSEPL · £4.7B
Reward74Risk40Yield2.5%
Croda International PLCCRDA · £4.6B
Reward48Risk46Yield3.4%
Ithaca Energy PLCITH · £4.5B
Reward53Risk49Yield0.1%
Babcock International Group PLCBAB · £4.5B
Reward54Risk52Yield0.8%
Balfour Beatty plcBBY · £4.4B
Reward61Risk30Yield1.6%
Barratt Redrow plcBTRW · £4.4B
Reward46Risk56Yield1.9%
Renishaw PLCRSW · £4.3B
Reward70Risk30Yield1.4%
Eutelsat GroupETL · £4.2B
Reward42Risk42
LondonMetric Property PlcLMP · £4.2B
Reward58Risk49Yield7.3%
ConvaTec Group PLCCTEC · £4.2B
Reward57Risk41Yield3.5%
Tritax Big Box REIT plcBBOX · £4.1B
Reward57Risk45Yield5.8%
Howden Joinery Group PlcHWDN · £4.1B
Reward52Risk45Yield2.9%
Whitbread PLCWTB · £4.1B
Reward35Risk61Yield4.1%
Harbour Energy PLCHBR · £4.0B
Reward65Risk45Yield5.8%
WPP PLCWPP · £4.0B
Reward46Risk59Yield3.9%
Softcat plcSCT · £4.0B
Reward63Risk45Yield1.6%
British Land Company PLCBLND · £4.0B
Reward52Risk54Yield6.1%
Glanbia plcGLB · £4.0B
Reward46Risk43Yield2.9%
Rotork PLCROR · £4.0B
Reward69Risk45Yield1.7%
Persimmon PLCPSN · £4.0B
Reward46Risk49Yield4.8%
Zegona Communications PlcZEG · £4.0B
Reward71Risk62Yield0.0%
JD Sports Fashion PLCJD · £3.8B
Reward67Risk56Yield1.6%
Burberry Group PLCBRBY · £3.6B
Reward43Risk48
Auto Trader Group plcAUTO · £3.5B
Reward55Risk45Yield2.5%
RS GROUP PLCRS1 · £3.5B
Reward56Risk39Yield3.0%
Mondi PLCMNDI · £3.5B
Reward47Risk55Yield1.8%
Frasers Group PLCFRAS · £3.4B
Reward52Risk53
Rightmove PLCRMV · £3.3B
Reward60Risk45Yield2.4%

Frequently asked questions

What is the UK Mid-Caps collection?

FTSE 250 territory — big enough to matter, small enough to be overlooked. It currently holds 176 stocks, each rated by Openbook's Reward and Risk scores. Below the blue chips sits the domestic heart of the London market: companies large enough to be established businesses but followed by a fraction of the analysts.

How are UK Mid-Caps stocks selected?

Constituents are chosen by a rules-based screen over the full UK common-stock universe, then ranked by market capitalisation. This is a proxy screen — see the description above for the exact criteria and its limitations.

How often is the UK Mid-Caps list updated?

It is rebuilt from live market data, so the constituents and their rankings update as prices and company fundamentals change — there is no fixed, hand-edited list.

How should I use the Reward and Risk ratings?

Openbook's Reward rating combines a stock's growth, momentum, profitability and valuation into a single 0–100 score, and the Risk rating scores financial strength, volatility and size. Use them to compare names within this theme — broadly, a higher Reward alongside a lower Risk is more attractive. They are quantitative research signals, not investment advice.

Openbook Reward and Risk ratings and factor scores are quantitative signals for research, not investment advice. Data may be delayed. Some US-listed names carry partial factor coverage.