River Lew at Great Rutleigh
EA name: RIVER LEW AT GREAT RUTLEIGH (also listed as “RIVER LEW (TORRIDGE) AT GREAT RUTLEIGH”)
Environment Agency sampling point SW-72930857 · Freshwater - rivers · listed as open (“open” does not mean it is sampled now)
These are samples taken on a date, not live readings of the river. Results reach the Environment Agency's archive days to months after the sample is taken, so the newest here may be weeks or months old. FloodRadar does not grade them.
Where and when
- Last sampled
- 2 Sep 2026, 13:1129 days ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
- Samples banked
- 29 since 13 Oct 2023 Imported periods: 1 Oct 2023 – 30 Sep 2026. Samples outside them are not shown here.
- Latest sample
- River / running surface water Planned investigation (local monitoring)
- Where
- National Grid 251400, 100790As published, to the nearest 10 m. Open in a map
- River, by its own name
- Lew
- River, by the map
- River LewPlaced on the river its name gives, 2 m from the line.
- Next gauge downstream
- Gribbleford Bridge On the River Lew · 2.1 km along the river
- Nearest gauge upstream
- Norley Bridge On the River North Lew · 2.2 km along the river
- Why it was sampled
- Planned investigation (local monitoring) (26 samples)
Planned investigation (national agency policy) (3 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
91.8%
Sampled 2 Sep 2026, 29 days ago · 29 results banked
Every result (29)
| Sampled | Result as published | Reads as |
|---|---|---|
| 2 Sep 2026, 13:11 | 91.8 | 91.8% |
| 19 Aug 2026, 09:47 | 48 | 48% |
| 3 Jul 2026, 11:59 | 97.6 | 97.6% |
| 8 Jun 2026, 10:39 | 88 | 88% |
| 11 May 2026, 11:53 | 98.3 | 98.3% |
| 27 Apr 2026, 11:27 | 100.2 | 100.2% |
| 6 Mar 2026, 12:39 | 94.3 | 94.3% |
| 11 Feb 2026, 14:32 | 96.6 | 96.6% |
| 26 Jan 2026, 08:47 | 98.8 | 98.8% |
| 15 Dec 2025, 10:36 | 98.2 | 98.2% |
| 3 Nov 2025, 14:19 | 94.3 | 94.3% |
| 9 Oct 2025, 14:05 | 94.2 | 94.2% |
| 2 Apr 2025, 10:37 | 100.4 | 100.4% |
| 6 Mar 2025, 11:46 | 100.3 | 100.3% |
| 6 Feb 2025, 11:09 | 98.2 | 98.2% |
| 3 Jan 2025, 12:34 | 97.2 | 97.2% |
| 10 Dec 2024, 11:24 | 96.2 | 96.2% |
| 26 Nov 2024, 12:02 | 97.5 | 97.5% |
| 21 Oct 2024, 12:23 | 95.9 | 95.9% |
| 6 Sep 2024, 09:26 | 92.2 | 92.2% |
| 1 Aug 2024, 11:14 | 96 | 96% |
| 24 Jul 2024, 12:19 | 94.1 | 94.1% |
| 2 Jul 2024, 11:29 | 100 | 100% |
| 7 Jun 2024, 10:21 | 99.3 | 99.3% |
| 1 Feb 2024, 13:59 | 96.8 | 96.8% |
| 2 Jan 2024, 11:24 | 97.7 | 97.7% |
| 5 Dec 2023, 11:38 | 97.1 | 97.1% |
| 8 Nov 2023, 13:51 | 96.3 | 96.3% |
| 13 Oct 2023, 10:26 | 93.6 | 93.6% |
Dissolved oxygen
as O2 · code 9924 · mg/l
8.94 mg/l
Sampled 2 Sep 2026, 29 days ago · 29 results banked
Every result (29)
| Sampled | Result as published | Reads as |
|---|---|---|
| 2 Sep 2026, 13:11 | 8.94 | 8.94 mg/l |
| 19 Aug 2026, 09:47 | 4.54 | 4.54 mg/l |
| 3 Jul 2026, 11:59 | 9.37 | 9.37 mg/l |
| 8 Jun 2026, 10:39 | 9.23 | 9.23 mg/l |
| 11 May 2026, 11:53 | 10.8 | 10.8 mg/l |
| 27 Apr 2026, 11:27 | 10.8 | 10.8 mg/l |
| 6 Mar 2026, 12:39 | 11 | 11 mg/l |
| 11 Feb 2026, 14:32 | 11 | 11 mg/l |
| 26 Jan 2026, 08:47 | 12 | 12 mg/l |
| 15 Dec 2025, 10:36 | 11.2 | 11.2 mg/l |
| 3 Nov 2025, 14:19 | 10 | 10 mg/l |
| 9 Oct 2025, 14:05 | 10.1 | 10.1 mg/l |
| 2 Apr 2025, 10:37 | 11.8 | 11.8 mg/l |
| 6 Mar 2025, 11:46 | 12.5 | 12.5 mg/l |
| 6 Feb 2025, 11:09 | 12.7 | 12.7 mg/l |
| 3 Jan 2025, 12:34 | 12.7 | 12.7 mg/l |
| 10 Dec 2024, 11:24 | 11.5 | 11.5 mg/l |
| 26 Nov 2024, 12:02 | 11.3 | 11.3 mg/l |
| 21 Oct 2024, 12:23 | 10.3 | 10.3 mg/l |
| 6 Sep 2024, 09:26 | 9.4 | 9.4 mg/l |
| 1 Aug 2024, 11:14 | 9.2 | 9.2 mg/l |
| 24 Jul 2024, 12:19 | 9.32 | 9.32 mg/l |
| 2 Jul 2024, 11:29 | 10 | 10 mg/l |
| 7 Jun 2024, 10:21 | 10.6 | 10.6 mg/l |
| 1 Feb 2024, 13:59 | 11.5 | 11.5 mg/l |
| 2 Jan 2024, 11:24 | 10.9 | 10.9 mg/l |
| 5 Dec 2023, 11:38 | 11.7 | 11.7 mg/l |
| 8 Nov 2023, 13:51 | 10.6 | 10.6 mg/l |
| 13 Oct 2023, 10:26 | 9.25 | 9.25 mg/l |
Water temperature
code 0076 · °C
16.5 °C
Sampled 2 Sep 2026, 29 days ago · 29 results banked
Every result (29)
| Sampled | Result as published | Reads as |
|---|---|---|
| 2 Sep 2026, 13:11 | 16.5 | 16.5 °C |
| 19 Aug 2026, 09:47 | 17.9 | 17.9 °C |
| 3 Jul 2026, 11:59 | 17.2 | 17.2 °C |
| 8 Jun 2026, 10:39 | 13.1 | 13.1 °C |
| 11 May 2026, 11:53 | 11.1 | 11.1 °C |
| 27 Apr 2026, 11:27 | 11.8 | 11.8 °C |
| 6 Mar 2026, 12:39 | 8.4 | 8.4 °C |
| 11 Feb 2026, 14:32 | 9.5 | 9.5 °C |
| 26 Jan 2026, 08:47 | 6.8 | 6.8 °C |
| 15 Dec 2025, 10:36 | 9.6 | 9.6 °C |
| 3 Nov 2025, 14:19 | 12.5 | 12.5 °C |
| 9 Oct 2025, 14:05 | 12.1 | 12.1 °C |
| 2 Apr 2025, 10:37 | 8.2 | 8.2 °C |
| 6 Mar 2025, 11:46 | 5.9 | 5.9 °C |
| 6 Feb 2025, 11:09 | 4.5 | 4.5 °C |
| 3 Jan 2025, 12:34 | 4.2 | 4.2 °C |
| 10 Dec 2024, 11:24 | 7.6 | 7.6 °C |
| 26 Nov 2024, 12:02 | 8.9 | 8.9 °C |
| 21 Oct 2024, 12:23 | 12 | 12 °C |
| 6 Sep 2024, 09:26 | 14.4 | 14.4 °C |
| 1 Aug 2024, 11:14 | 17.3 | 17.3 °C |
| 24 Jul 2024, 12:19 | 15.7 | 15.7 °C |
| 2 Jul 2024, 11:29 | 15.1 | 15.1 °C |
| 7 Jun 2024, 10:21 | 12.2 | 12.2 °C |
| 1 Feb 2024, 13:59 | 7.8 | 7.8 °C |
| 2 Jan 2024, 11:24 | 10.4 | 10.4 °C |
| 5 Dec 2023, 11:38 | 7.4 | 7.4 °C |
| 8 Nov 2023, 13:51 | 11.1 | 11.1 °C |
| 13 Oct 2023, 10:26 | 15.8 | 15.8 °C |
pH
code 0061
7.34
Sampled 2 Sep 2026, 29 days ago · 29 results banked
Every result (29)
| Sampled | Result as published | Reads as |
|---|---|---|
| 2 Sep 2026, 13:11 | 7.34 | 7.34 |
| 19 Aug 2026, 09:47 | 7.09 | 7.09 |
| 3 Jul 2026, 11:59 | 7.33 | 7.33 |
| 8 Jun 2026, 10:39 | 7.44 | 7.44 |
| 11 May 2026, 11:53 | 7.49 | 7.49 |
| 27 Apr 2026, 11:27 | 7.46 | 7.46 |
| 6 Mar 2026, 12:39 | 7.37 | 7.37 |
| 11 Feb 2026, 14:32 | 7.21 | 7.21 |
| 26 Jan 2026, 08:47 | 7.75 | 7.75 |
| 15 Dec 2025, 10:36 | 7.55 | 7.55 |
| 3 Nov 2025, 14:19 | 7.3 | 7.3 |
| 9 Oct 2025, 14:05 | 7.39 | 7.39 |
| 2 Apr 2025, 10:37 | 7.76 | 7.76 |
| 6 Mar 2025, 11:46 | 7.37 | 7.37 |
| 6 Feb 2025, 11:09 | 7.42 | 7.42 |
| 3 Jan 2025, 12:34 | 7.39 | 7.39 |
| 10 Dec 2024, 11:24 | 7.11 | 7.11 |
| 26 Nov 2024, 12:02 | 7.33 | 7.33 |
| 21 Oct 2024, 12:23 | 7.09 | 7.09 |
| 6 Sep 2024, 09:26 | 7.68 | 7.68 |
| 1 Aug 2024, 11:14 | 7.15 | 7.15 |
| 24 Jul 2024, 12:19 | 7.93 | 7.93 |
| 2 Jul 2024, 11:29 | 7.5 | 7.5 |
| 7 Jun 2024, 10:21 | 7.67 | 7.67 |
| 1 Feb 2024, 13:59 | 7.23 | 7.23 |
| 2 Jan 2024, 11:24 | 7.75 | 7.75 |
| 5 Dec 2023, 11:38 | 7.15 | 7.15 |
| 8 Nov 2023, 13:51 | 6.92 | 6.92 |
| 13 Oct 2023, 10:26 | 6.94 | 6.94 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
below 0.03 mg/l (not detected above this)
Sampled 2 Sep 2026, 29 days ago · 29 results banked
Every result (29)
| Sampled | Result as published | Reads as |
|---|---|---|
| 2 Sep 2026, 13:11 | <0.03 | below 0.03 mg/l (not detected above this) |
| 19 Aug 2026, 09:47 | <0.03 | below 0.03 mg/l (not detected above this) |
| 3 Jul 2026, 11:59 | 0.034 | 0.034 mg/l |
| 8 Jun 2026, 10:39 | <0.03 | below 0.03 mg/l (not detected above this) |
| 11 May 2026, 11:53 | <0.03 | below 0.03 mg/l (not detected above this) |
| 27 Apr 2026, 11:27 | <0.03 | below 0.03 mg/l (not detected above this) |
| 6 Mar 2026, 12:39 | 0.25 | 0.25 mg/l |
| 11 Feb 2026, 14:32 | 0.17 | 0.17 mg/l |
| 26 Jan 2026, 08:47 | 0.081 | 0.081 mg/l |
| 15 Dec 2025, 10:36 | 0.14 | 0.14 mg/l |
| 3 Nov 2025, 14:19 | <0.03 | below 0.03 mg/l (not detected above this) |
| 9 Oct 2025, 14:05 | <0.03 | below 0.03 mg/l (not detected above this) |
| 2 Apr 2025, 10:37 | <0.03 | below 0.03 mg/l (not detected above this) |
| 6 Mar 2025, 11:46 | 0.032 | 0.032 mg/l |
| 6 Feb 2025, 11:09 | 0.05 | 0.05 mg/l |
| 3 Jan 2025, 12:34 | 0.037 | 0.037 mg/l |
| 10 Dec 2024, 11:24 | 0.045 | 0.045 mg/l |
| 26 Nov 2024, 12:02 | 0.051 | 0.051 mg/l |
| 21 Oct 2024, 12:23 | <0.03 | below 0.03 mg/l (not detected above this) |
| 6 Sep 2024, 09:26 | 0.26 | 0.26 mg/l |
| 1 Aug 2024, 11:14 | <0.03 | below 0.03 mg/l (not detected above this) |
| 24 Jul 2024, 12:19 | <0.03 | below 0.03 mg/l (not detected above this) |
| 2 Jul 2024, 11:29 | <0.03 | below 0.03 mg/l (not detected above this) |
| 7 Jun 2024, 10:21 | <0.03 | below 0.03 mg/l (not detected above this) |
| 1 Feb 2024, 13:59 | 0.12 | 0.12 mg/l |
| 2 Jan 2024, 11:24 | 0.12 | 0.12 mg/l |
| 5 Dec 2023, 11:38 | 0.1 | 0.1 mg/l |
| 8 Nov 2023, 13:51 | 0.09 | 0.09 mg/l |
| 13 Oct 2023, 10:26 | 0.095 | 0.095 mg/l |
Nitrate
as nitrogen (N) · code 0117 · mg/l
1.29 mg/l
Sampled 2 Sep 2026, 29 days ago · 29 results banked
Every result (29)
| Sampled | Result as published | Reads as |
|---|---|---|
| 2 Sep 2026, 13:11 | 1.29 | 1.29 mg/l |
| 19 Aug 2026, 09:47 | <0.196 | below 0.196 mg/l (not detected above this) |
| 3 Jul 2026, 11:59 | 0.786 | 0.786 mg/l |
| 8 Jun 2026, 10:39 | 0.822 | 0.822 mg/l |
| 11 May 2026, 11:53 | 0.775 | 0.775 mg/l |
| 27 Apr 2026, 11:27 | 0.914 | 0.914 mg/l |
| 6 Mar 2026, 12:39 | 1.08 | 1.08 mg/l |
| 11 Feb 2026, 14:32 | 0.962 | 0.962 mg/l |
| 26 Jan 2026, 08:47 | 1.79 | 1.79 mg/l |
| 15 Dec 2025, 10:36 | 0.576 | 0.576 mg/l |
| 3 Nov 2025, 14:19 | 1.4 | 1.4 mg/l |
| 9 Oct 2025, 14:05 | 1.2 | 1.2 mg/l |
| 2 Apr 2025, 10:37 | 0.726 | 0.726 mg/l |
| 6 Mar 2025, 11:46 | 1.49 | 1.49 mg/l |
| 6 Feb 2025, 11:09 | 1.49 | 1.49 mg/l |
| 3 Jan 2025, 12:34 | 1.59 | 1.59 mg/l |
| 10 Dec 2024, 11:24 | 1.79 | 1.79 mg/l |
| 26 Nov 2024, 12:02 | 1.69 | 1.69 mg/l |
| 21 Oct 2024, 12:23 | 1.5 | 1.5 mg/l |
| 6 Sep 2024, 09:26 | 1.97 | 1.97 mg/l |
| 1 Aug 2024, 11:14 | 0.946 | 0.946 mg/l |
| 24 Jul 2024, 12:19 | 0.996 | 0.996 mg/l |
| 2 Jul 2024, 11:29 | 0.886 | 0.886 mg/l |
| 7 Jun 2024, 10:21 | 0.996 | 0.996 mg/l |
| 1 Feb 2024, 13:59 | 1.18 | 1.18 mg/l |
| 2 Jan 2024, 11:24 | 0.724 | 0.724 mg/l |
| 5 Dec 2023, 11:38 | 0.976 | 0.976 mg/l |
| 8 Nov 2023, 13:51 | 0.923 | 0.923 mg/l |
| 13 Oct 2023, 10:26 | 1.09 | 1.09 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.035 mg/l
Sampled 2 Sep 2026, 29 days ago · 28 results banked
Every result (28)
| Sampled | Result as published | Reads as |
|---|---|---|
| 2 Sep 2026, 13:11 | 0.035 | 0.035 mg/l |
| 19 Aug 2026, 09:47 | 0.028 | 0.028 mg/l |
| 3 Jul 2026, 11:59 | 0.058 | 0.058 mg/l |
| 8 Jun 2026, 10:39 | 0.043 | 0.043 mg/l |
| 11 May 2026, 11:53 | 0.045 | 0.045 mg/l |
| 27 Apr 2026, 11:27 | 0.032 | 0.032 mg/l |
| 6 Mar 2026, 12:39 | 0.065 | 0.065 mg/l |
| 11 Feb 2026, 14:32 | 0.053 | 0.053 mg/l |
| 26 Jan 2026, 08:47 | 0.028 | 0.028 mg/l |
| 15 Dec 2025, 10:36 | 0.066 | 0.066 mg/l |
| 3 Nov 2025, 14:19 | 0.025 | 0.025 mg/l |
| 9 Oct 2025, 14:05 | 0.021 | 0.021 mg/l |
| 2 Apr 2025, 10:37 | 0.031 | 0.031 mg/l |
| 6 Mar 2025, 11:46 | 0.02 | 0.02 mg/l |
| 6 Feb 2025, 11:09 | 0.024 | 0.024 mg/l |
| 3 Jan 2025, 12:34 | 0.02 | 0.02 mg/l |
| 10 Dec 2024, 11:24 | 0.019 | 0.019 mg/l |
| 26 Nov 2024, 12:02 | 0.029 | 0.029 mg/l |
| 21 Oct 2024, 12:23 | 0.027 | 0.027 mg/l |
| 6 Sep 2024, 09:26 | 0.062 | 0.062 mg/l |
| 1 Aug 2024, 11:14 | 0.043 | 0.043 mg/l |
| 24 Jul 2024, 12:19 | 0.051 | 0.051 mg/l |
| 2 Jul 2024, 11:29 | 0.045 | 0.045 mg/l |
| 7 Jun 2024, 10:21 | 0.041 | 0.041 mg/l |
| 2 Jan 2024, 11:24 | 0.031 | 0.031 mg/l |
| 5 Dec 2023, 11:38 | 0.034 | 0.034 mg/l |
| 8 Nov 2023, 13:51 | 0.025 | 0.025 mg/l |
| 13 Oct 2023, 10:26 | 0.043 | 0.043 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
266 µS/cm
Sampled 2 Sep 2026, 29 days ago · 29 results banked
Every result (29)
| Sampled | Result as published | Reads as |
|---|---|---|
| 2 Sep 2026, 13:11 | 266 | 266 µS/cm |
| 19 Aug 2026, 09:47 | 221 | 221 µS/cm |
| 3 Jul 2026, 11:59 | 187 | 187 µS/cm |
| 8 Jun 2026, 10:39 | 191 | 191 µS/cm |
| 11 May 2026, 11:53 | 165 | 165 µS/cm |
| 27 Apr 2026, 11:27 | 147 | 147 µS/cm |
| 6 Mar 2026, 12:39 | 137 | 137 µS/cm |
| 11 Feb 2026, 14:32 | 108 | 108 µS/cm |
| 26 Jan 2026, 08:47 | 123 | 123 µS/cm |
| 15 Dec 2025, 10:36 | 109 | 109 µS/cm |
| 3 Nov 2025, 14:19 | 140 | 140 µS/cm |
| 9 Oct 2025, 14:05 | 151 | 151 µS/cm |
| 2 Apr 2025, 10:37 | 162 | 162 µS/cm |
| 6 Mar 2025, 11:46 | 140 | 140 µS/cm |
| 6 Feb 2025, 11:09 | 133 | 133 µS/cm |
| 3 Jan 2025, 12:34 | 146 | 146 µS/cm |
| 10 Dec 2024, 11:24 | 135 | 135 µS/cm |
| 26 Nov 2024, 12:02 | 127 | 127 µS/cm |
| 21 Oct 2024, 12:23 | 126 | 126 µS/cm |
| 6 Sep 2024, 09:26 | 188 | 188 µS/cm |
| 1 Aug 2024, 11:14 | 165 | 165 µS/cm |
| 24 Jul 2024, 12:19 | 154 | 154 µS/cm |
| 2 Jul 2024, 11:29 | 185 | 185 µS/cm |
| 7 Jun 2024, 10:21 | 160 | 160 µS/cm |
| 1 Feb 2024, 13:59 | 147 | 147 µS/cm |
| 2 Jan 2024, 11:24 | 107 | 107 µS/cm |
| 5 Dec 2023, 11:38 | 111 | 111 µS/cm |
| 8 Nov 2023, 13:51 | 124 | 124 µS/cm |
| 13 Oct 2023, 10:26 | 129 | 129 µS/cm |
E. coli
confirmed, membrane filtration · code 2348 · per 100 ml
4300 per 100 ml
Sampled 5 Dec 2023, 2.8 years ago · 3 results banked
Every result (3)
| Sampled | Result as published | Reads as |
|---|---|---|
| 5 Dec 2023, 11:38 | 4300 | 4300 per 100 ml |
| 8 Nov 2023, 13:51 | 2600 | 2600 per 100 ml |
| 13 Oct 2023, 10:26 | 27000 | 27000 per 100 ml |
Everything measured here
15 determinands, each kept by its code, unit and sample material: results in different units or on different materials are never mixed. A “below” result is under the laboratory's detection limit, not zero.
Show all 15 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| Oxygen, Dissolved, % Saturation 9901 | River water | 29 | Oct 2023 – Sep 2026 | 91.8% 2 Sep 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 29 | Oct 2023 – Sep 2026 | 8.94 mg/l 2 Sep 2026 |
| Temperature of Water 0076 | River water | 29 | Oct 2023 – Sep 2026 | 16.5 °C 2 Sep 2026 |
| pH 0061 | River water | 29 | Oct 2023 – Sep 2026 | 7.34 2 Sep 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 29 | Oct 2023 – Sep 2026 | below 0.03 mg/l 2 Sep 2026 |
| Nitrate as N 0117 | River water | 29 | Oct 2023 – Sep 2026 | 1.29 mg/l 2 Sep 2026 |
| Orthophosphate, reactive as P 0180 | River water | 28 | Oct 2023 – Sep 2026 | 0.035 mg/l 2 Sep 2026 |
| Conductivity at 25 C 0077 | River water | 29 | Oct 2023 – Sep 2026 | 266 µS/cm 2 Sep 2026 |
| Escherichia coli : Confirmed : MF 2348 | River water | 3 | Oct 2023 – Dec 2023 | 4300 per 100 ml 5 Dec 2023 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 28 | Oct 2023 – Sep 2026 | 39 mg/l 2 Sep 2026 |
| Ammonia un-ionised as N 0119 | River water | 29 | Oct 2023 – Sep 2026 | below 0.0002 mg/l 2 Sep 2026 |
| Enterococci: Intestinal: Confirmed: MF 3723 | River water | 3 | Oct 2023 – Dec 2023 | 5500 colony forming units / 100ml 5 Dec 2023 |
| Enterococci: Intestinal: Presumptive: MF 3722 | River water | 3 | Oct 2023 – Dec 2023 | 5500 colony forming units / 100ml 5 Dec 2023 |
| Nitrite as N 0118 | River water | 29 | Oct 2023 – Sep 2026 | 0.0086 mg/l 2 Sep 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 29 | Oct 2023 – Sep 2026 | 1.3 mg/l 2 Sep 2026 |
FloodRadar does not grade these results: there is no overall score, and official river classifications are a separate dataset. A sample taken downstream of an overflow does not by itself show where anything in it came from. River connections and distances are traced on OS Open Rivers (edition 2026-04), which leaves out many small channels.
Water samples: Environment Agency Water Quality Archive, © Environment Agency and/or database right 2026, Open Government Licence v3.0.
Contains OS data © Crown copyright and database rights 2026.