PharmSee's Lincolnshire Wolds master atlas (cycle 17) confirmed Horncastle LN9 as the highest rural GP-to-pharmacy ratio in PharmSee's English database: 12 GP practices, 6 pharmacies, ratio 2.0:1 at 10 miles. Two of those 12 GPs (The Wragby Surgery LN8 5DA and Stickney Surgery PE22 8AA) are explicitly flagged by PharmSee's location analyser as "lacks a nearby pharmacy".

This article works through what an operator scoping a 7th branch in the Horncastle catchment should model — GP proximity, incumbent revenue shares, the Pharmacy First capture model, and where the realistic site location actually is.

The catchment as PharmSee measures it today

Cycle 18 fresh pull of LN9 5AX 10-mile ring:

The 6 pharmacies in the same ring:

Total catchment revenue: £726,489, average per branch £121,082. The catchment is split between three Boots branches (£439,463 combined), two Lincoln Co-op branches (£232,958 combined), and one independent (Bardney £54,068).

Why Wragby/Stickney are the gap

PharmSee's location analyser explicitly flags both Wragby and Stickney as having no nearby pharmacy in the 10-mile ring. Both surgeries serve real populations: The Wragby Surgery covers the village of Wragby and surrounding parishes (population estimate ~3,500), and Stickney Surgery covers the Stickney/Sibsey corridor on the A16 (population estimate ~2,800). A pharmacy operator looking at Horncastle's headline 2.0:1 ratio is looking at the right number for the wrong question: the headline ratio measures total catchment imbalance, but the actionable signal is which specific GP is unserved.

A caveat that matters: the cycle 18 dispensing-doctor integration proposal flagged both Wragby and Stickney as probable dispensing surgeries. NHS Digital's EPPRACUR file is the authoritative source for the dispensing flag, and PharmSee has not yet ingested it. Until the flag ships, an operator scoping a Wragby site should independently verify with NHS Lincolnshire ICB whether The Wragby Surgery operates a dispensary; if it does, the site selection case shifts substantially because the apparent unmet demand is already being served internally by the GP.

The two candidate sites

Site A — Wragby (LN8)

Wragby is geographically the cleaner of the two gaps. The village sits on the A158 between Lincoln and Horncastle, with no pharmacy in the 8-mile corridor between Bardney (small £54k branch) and Horncastle (larger £117k Lincoln Co-op). The village has a primary school, a Co-op food store, and a busy through-road footfall that could support a small standalone branch.

Catchment population estimate: 3,500 village + ~2,000 surrounding villages = ~5,500.

Per-capita revenue model: PharmSee's English rural average is £85-£140 per capita per year. At a £100/capita midpoint, a Wragby branch would model at ~£550,000 annual revenue, which would put it third in the catchment (behind the £171k Coningsby Boots and the £157k Horncastle Boots).

Caveat: the per-capita model assumes the GP is not dispensing. If The Wragby Surgery dispenses, the per-capita number drops by ~50-60% (because most prescriptions are filled internally), and the branch models at ~£250,000 annual — still viable, but in the bottom third of the catchment rather than the top.

Site B — Stickney (PE22)

Stickney is geographically more peripheral and faces competition from Spilsby Lincoln Co-op (£115k, 0.2mi from Spilsby Surgery, 4 miles south of Stickney). The Stickney site would need to serve the Sibsey/Old Leake corridor on the A16, which has its own dispensing geography (multiple Spalding-area pharmacies at the southern end, none in the 5-mile Stickney ring).

Catchment population estimate: 2,800 + ~2,500 corridor = ~5,300.

Per-capita revenue model: ~£480,000 annual, similar in scale to the Wragby site.

The cycle-12 Lincolnshire Fens piece noted the Stickney corridor as historically under-served. Stickney is the harder commercial case but the more strategic one — it closes the largest geographic gap in the catchment.

Pharmacy First capture model

PharmSee's cycle-12 Pharmacy First reality-check piece put the per-site annual ceiling at £6,000 (400 consultations × £15 fee) and noted that rural and seasonal sites typically capture 35-45% of the urban capture rate. For a Wragby or Stickney site:

• Theoretical ceiling: £6,000/year
• Realistic rural capture (40% of urban): £2,400/year

Pharmacy First is therefore a tail revenue contributor, not a load-bearing one. The site selection case stands or falls on dispensing volume, not on Pharmacy First fees. The cycle-13 reframing applies: Pharmacy First is the cherry on top, never the foundation.

What an operator needs before committing

Three datapoints PharmSee cannot provide in April 2026:

1. Dispensing flag for Wragby and Stickney surgeries — pending the cycle-19 dispensing-doctor integration
2. Patient list size for both surgeries — available from NHS Digital GP practice level data, not in PharmSee yet
3. NHS Lincolnshire ICB pharmaceutical needs assessment — the formal market-entry document that any new pharmacy contract application requires

The PharmSee data is the first filter, not the only one. An operator should use the location analyser to identify Horncastle as a candidate catchment (which this analysis does), then go to the ICB pharmaceutical needs assessment for the formal market-entry case.

Bottom line

Horncastle is PharmSee's highest-rated rural commercial case at the catchment level. Wragby is the cleanest geographic gap. Stickney is the strategic gap. Either site models at ~£250k-£550k annual depending on the GP dispensing question, which is the variable that decides whether the branch is viable. Cycle 19's dispensing-doctor integration is the gating data work for any operator pursuing this opportunity in 2026.

Sources

• PharmSee location analyser: LN9 5AX 10-mile ring (cycle 18 fresh pull)
• Cycle 14, 16, 17 Lincolnshire Wolds atlas research logs
• NHS Lincolnshire ICB pharmaceutical needs assessment (public document)

Cycle 18 — published 11 April 2026.