Sewer Dyke Catchment - North Clifton
EA name: SEWER DYKE CATCHMENT - NORTH CLIFTON
Environment Agency sampling point MD-41066040 · 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
- 21 May 2026, 09:444 months ago · time as the Environment Agency records it (UK clock time; the source gives no time zone). Not sampled since, as far as the archive shows: the Environment Agency was asked up to 30 Sep 2026 and had nothing newer.
- Samples banked
- 31 since 18 Jun 2024 Imported periods: 1 Oct 2023 – 30 Sep 2026. Samples outside them are not shown here.
- Latest sample
- River / running surface water Monitoring (national agency policy)
- Where
- National Grid 482100, 372280As published, to the nearest 10 m. Open in a map
- River, by its own name
- Sewer Dyke Catchment
- River, by the map
- Not placedNearest line is 455 m away and its name does not agree. The river map cannot say which watercourse this is.
- Next gauge downstream
- Not known
- Why it was sampled
- Monitoring (national agency policy) (31 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
100%
Sampled 21 May 2026, 4 months ago · 31 results banked
Every result (31)
| Sampled | Result as published | Reads as |
|---|---|---|
| 21 May 2026, 09:44 | 100 | 100% |
| 1 May 2026, 10:11 | 76.3 | 76.3% |
| 15 Apr 2026, 10:00 | 96 | 96% |
| 8 Apr 2026, 13:47 | 109.5 | 109.5% |
| 16 Mar 2026, 10:43 | 74.1 | 74.1% |
| 5 Mar 2026, 14:42 | 91.4 | 91.4% |
| 18 Feb 2026, 10:14 | 97.8 | 97.8% |
| 6 Feb 2026, 10:28 | 72.3 | 72.3% |
| 21 Jan 2026, 10:10 | 73.1 | 73.1% |
| 8 Jan 2026, 13:09 | 80.2 | 80.2% |
| 17 Dec 2025, 12:38 | 40.1 | 40.1% |
| 9 Dec 2025, 12:32 | 53.7 | 53.7% |
| 18 Nov 2025, 09:35 | 50.3 | 50.3% |
| 11 Nov 2025, 10:49 | 58.1 | 58.1% |
| 7 Oct 2025, 11:44 | 66.4 | 66.4% |
| 1 Sep 2025, 11:04 | 82.1 | 82.1% |
| 15 Aug 2025, 11:43 | 52.8 | 52.8% |
| 15 Jul 2025, 09:38 | 90.1 | 90.1% |
| 9 Jun 2025, 12:46 | 74.1 | 74.1% |
| 16 May 2025, 11:40 | 119.5 | 119.5% |
| 24 Apr 2025, 14:33 | 127.2 | 127.2% |
| 12 Mar 2025, 12:23 | 104.9 | 104.9% |
| 7 Feb 2025, 10:44 | 66.1 | 66.1% |
| 24 Jan 2025, 10:49 | 87.4 | 87.4% |
| 5 Dec 2024, 10:44 | 64.1 | 64.1% |
| 19 Nov 2024, 12:01 | 70.7 | 70.7% |
| 18 Oct 2024, 11:58 | 49.7 | 49.7% |
| 23 Sep 2024, 08:59 | 36.9 | 36.9% |
| 22 Aug 2024, 11:32 | 29.7 | 29.7% |
| 18 Jul 2024, 09:50 | 31 | 31% |
| 18 Jun 2024, 11:25 | 94 | 94% |
Dissolved oxygen
as O2 · code 9924 · mg/l
10.3 mg/l
Sampled 21 May 2026, 4 months ago · 31 results banked
Every result (31)
| Sampled | Result as published | Reads as |
|---|---|---|
| 21 May 2026, 09:44 | 10.3 | 10.3 mg/l |
| 1 May 2026, 10:11 | 8.56 | 8.56 mg/l |
| 15 Apr 2026, 10:00 | 10.3 | 10.3 mg/l |
| 8 Apr 2026, 13:47 | 11.5 | 11.5 mg/l |
| 16 Mar 2026, 10:43 | 8.96 | 8.96 mg/l |
| 5 Mar 2026, 14:42 | 10.1 | 10.1 mg/l |
| 18 Feb 2026, 10:14 | 13.6 | 13.6 mg/l |
| 6 Feb 2026, 10:28 | 9.25 | 9.25 mg/l |
| 21 Jan 2026, 10:10 | 9.18 | 9.18 mg/l |
| 8 Jan 2026, 13:09 | 10.6 | 10.6 mg/l |
| 17 Dec 2025, 12:38 | 4.66 | 4.66 mg/l |
| 9 Dec 2025, 12:32 | 6.14 | 6.14 mg/l |
| 18 Nov 2025, 09:35 | 6.1 | 6.1 mg/l |
| 11 Nov 2025, 10:49 | 6.55 | 6.55 mg/l |
| 7 Oct 2025, 11:44 | 6.89 | 6.89 mg/l |
| 1 Sep 2025, 11:04 | 8.22 | 8.22 mg/l |
| 15 Aug 2025, 11:43 | 5.01 | 5.01 mg/l |
| 15 Jul 2025, 09:38 | 8.96 | 8.96 mg/l |
| 9 Jun 2025, 12:46 | 7.2 | 7.2 mg/l |
| 16 May 2025, 11:40 | 12.2 | 12.2 mg/l |
| 24 Apr 2025, 14:33 | 12.9 | 12.9 mg/l |
| 12 Mar 2025, 12:23 | 12.9 | 12.9 mg/l |
| 7 Feb 2025, 10:44 | 8.59 | 8.59 mg/l |
| 24 Jan 2025, 10:49 | 10.8 | 10.8 mg/l |
| 5 Dec 2024, 10:44 | 7.47 | 7.47 mg/l |
| 19 Nov 2024, 12:01 | 9.11 | 9.11 mg/l |
| 18 Oct 2024, 11:58 | 5.49 | 5.49 mg/l |
| 23 Sep 2024, 08:59 | 3.76 | 3.76 mg/l |
| 22 Aug 2024, 11:32 | 2.95 | 2.95 mg/l |
| 18 Jul 2024, 09:50 | 3.06 | 3.06 mg/l |
| 18 Jun 2024, 11:25 | 9.62 | 9.62 mg/l |
Water temperature
code 0076 · °C
13.9 °C
Sampled 21 May 2026, 4 months ago · 31 results banked
Every result (31)
| Sampled | Result as published | Reads as |
|---|---|---|
| 21 May 2026, 09:44 | 13.9 | 13.9 °C |
| 1 May 2026, 10:11 | 10.2 | 10.2 °C |
| 15 Apr 2026, 10:00 | 12.1 | 12.1 °C |
| 8 Apr 2026, 13:47 | 13 | 13 °C |
| 16 Mar 2026, 10:43 | 7.1 | 7.1 °C |
| 5 Mar 2026, 14:42 | 10.8 | 10.8 °C |
| 18 Feb 2026, 10:14 | 1.6 | 1.6 °C |
| 6 Feb 2026, 10:28 | 4.9 | 4.9 °C |
| 21 Jan 2026, 10:10 | 5.6 | 5.6 °C |
| 8 Jan 2026, 13:09 | 3.6 | 3.6 °C |
| 17 Dec 2025, 12:38 | 8.7 | 8.7 °C |
| 9 Dec 2025, 12:32 | 9.4 | 9.4 °C |
| 18 Nov 2025, 09:35 | 7 | 7 °C |
| 11 Nov 2025, 10:49 | 10 | 10 °C |
| 7 Oct 2025, 11:44 | 13.6 | 13.6 °C |
| 1 Sep 2025, 11:04 | 15.2 | 15.2 °C |
| 15 Aug 2025, 11:43 | 17.8 | 17.8 °C |
| 15 Jul 2025, 09:38 | 15.5 | 15.5 °C |
| 9 Jun 2025, 12:46 | 16.6 | 16.6 °C |
| 16 May 2025, 11:40 | 14.2 | 14.2 °C |
| 24 Apr 2025, 14:33 | 14.6 | 14.6 °C |
| 12 Mar 2025, 12:23 | 6.5 | 6.5 °C |
| 7 Feb 2025, 10:44 | 4.3 | 4.3 °C |
| 24 Jan 2025, 10:49 | 6.3 | 6.3 °C |
| 5 Dec 2024, 10:44 | 8.6 | 8.6 °C |
| 19 Nov 2024, 12:01 | 4.6 | 4.6 °C |
| 18 Oct 2024, 11:58 | 10.8 | 10.8 °C |
| 23 Sep 2024, 08:59 | 14.4 | 14.4 °C |
| 22 Aug 2024, 11:32 | 15.6 | 15.6 °C |
| 18 Jul 2024, 09:50 | 15.8 | 15.8 °C |
| 18 Jun 2024, 11:25 | 14.2 | 14.2 °C |
pH
code 0061
7.52
Sampled 21 May 2026, 4 months ago · 31 results banked
Every result (31)
| Sampled | Result as published | Reads as |
|---|---|---|
| 21 May 2026, 09:44 | 7.52 | 7.52 |
| 1 May 2026, 10:11 | 7.38 | 7.38 |
| 15 Apr 2026, 10:00 | 7.5 | 7.5 |
| 8 Apr 2026, 13:47 | 7.5 | 7.5 |
| 16 Mar 2026, 10:43 | 7.11 | 7.11 |
| 5 Mar 2026, 14:42 | 7.46 | 7.46 |
| 18 Feb 2026, 10:14 | 8.24 | 8.24 |
| 6 Feb 2026, 10:28 | 7.36 | 7.36 |
| 21 Jan 2026, 10:10 | 7.25 | 7.25 |
| 8 Jan 2026, 13:09 | 7.06 | 7.06 |
| 17 Dec 2025, 12:38 | 6.82 | 6.82 |
| 9 Dec 2025, 12:32 | 6.78 | 6.78 |
| 18 Nov 2025, 09:35 | 6.9 | 6.9 |
| 11 Nov 2025, 10:49 | 7.13 | 7.13 |
| 7 Oct 2025, 11:44 | 7.56 | 7.56 |
| 1 Sep 2025, 11:04 | 7.74 | 7.74 |
| 15 Aug 2025, 11:43 | 7.45 | 7.45 |
| 15 Jul 2025, 09:38 | 7.65 | 7.65 |
| 9 Jun 2025, 12:46 | 7.42 | 7.42 |
| 16 May 2025, 11:40 | 7.83 | 7.83 |
| 24 Apr 2025, 14:33 | 7.9 | 7.9 |
| 12 Mar 2025, 12:23 | 7.57 | 7.57 |
| 7 Feb 2025, 10:44 | 7 | 7 |
| 24 Jan 2025, 10:49 | 7.35 | 7.35 |
| 5 Dec 2024, 10:44 | 7.19 | 7.19 |
| 19 Nov 2024, 12:01 | 7.3 | 7.3 |
| 18 Oct 2024, 11:58 | 6.95 | 6.95 |
| 23 Sep 2024, 08:59 | 7.17 | 7.17 |
| 22 Aug 2024, 11:32 | 7.05 | 7.05 |
| 18 Jul 2024, 09:50 | 6.78 | 6.78 |
| 18 Jun 2024, 11:25 | 7.48 | 7.48 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
0.045 mg/l
Sampled 21 May 2026, 4 months ago · 31 results banked
Every result (31)
| Sampled | Result as published | Reads as |
|---|---|---|
| 21 May 2026, 09:44 | 0.045 | 0.045 mg/l |
| 1 May 2026, 10:11 | 0.056 | 0.056 mg/l |
| 15 Apr 2026, 10:00 | 0.034 | 0.034 mg/l |
| 8 Apr 2026, 13:47 | 0.06 | 0.06 mg/l |
| 16 Mar 2026, 10:43 | 0.57 | 0.57 mg/l |
| 5 Mar 2026, 14:42 | <0.03 | below 0.03 mg/l (not detected above this) |
| 18 Feb 2026, 10:14 | <0.03 | below 0.03 mg/l (not detected above this) |
| 6 Feb 2026, 10:28 | 0.1 | 0.1 mg/l |
| 21 Jan 2026, 10:10 | 0.14 | 0.14 mg/l |
| 8 Jan 2026, 13:09 | 0.056 | 0.056 mg/l |
| 17 Dec 2025, 12:38 | 0.086 | 0.086 mg/l |
| 9 Dec 2025, 12:32 | 0.047 | 0.047 mg/l |
| 18 Nov 2025, 09:35 | 0.087 | 0.087 mg/l |
| 11 Nov 2025, 10:49 | 0.6 | 0.6 mg/l |
| 7 Oct 2025, 11:44 | 0.17 | 0.17 mg/l |
| 1 Sep 2025, 11:04 | 0.038 | 0.038 mg/l |
| 15 Aug 2025, 11:43 | 0.077 | 0.077 mg/l |
| 15 Jul 2025, 09:38 | <0.03 | below 0.03 mg/l (not detected above this) |
| 9 Jun 2025, 12:46 | 0.078 | 0.078 mg/l |
| 16 May 2025, 11:40 | 0.14 | 0.14 mg/l |
| 24 Apr 2025, 14:33 | 0.08 | 0.08 mg/l |
| 12 Mar 2025, 12:23 | <0.03 | below 0.03 mg/l (not detected above this) |
| 7 Feb 2025, 10:44 | 0.077 | 0.077 mg/l |
| 24 Jan 2025, 10:49 | 0.063 | 0.063 mg/l |
| 5 Dec 2024, 10:44 | 0.039 | 0.039 mg/l |
| 19 Nov 2024, 12:01 | 0.065 | 0.065 mg/l |
| 18 Oct 2024, 11:58 | 0.073 | 0.073 mg/l |
| 23 Sep 2024, 08:59 | 0.07 | 0.07 mg/l |
| 22 Aug 2024, 11:32 | 0.042 | 0.042 mg/l |
| 18 Jul 2024, 09:50 | 0.056 | 0.056 mg/l |
| 18 Jun 2024, 11:25 | 0.035 | 0.035 mg/l |
Nitrate
as nitrogen (N) · code 0117 · mg/l
14.8 mg/l
Sampled 21 May 2026, 4 months ago · 31 results banked
Every result (31)
| Sampled | Result as published | Reads as |
|---|---|---|
| 21 May 2026, 09:44 | 14.8 | 14.8 mg/l |
| 1 May 2026, 10:11 | 5.49 | 5.49 mg/l |
| 15 Apr 2026, 10:00 | 16.9 | 16.9 mg/l |
| 8 Apr 2026, 13:47 | 16.9 | 16.9 mg/l |
| 16 Mar 2026, 10:43 | 10.9 | 10.9 mg/l |
| 5 Mar 2026, 14:42 | 8.56 | 8.56 mg/l |
| 18 Feb 2026, 10:14 | 5.47 | 5.47 mg/l |
| 6 Feb 2026, 10:28 | 5.55 | 5.55 mg/l |
| 21 Jan 2026, 10:10 | 7.11 | 7.11 mg/l |
| 8 Jan 2026, 13:09 | 16.9 | 16.9 mg/l |
| 17 Dec 2025, 12:38 | 11.9 | 11.9 mg/l |
| 9 Dec 2025, 12:32 | 10.9 | 10.9 mg/l |
| 18 Nov 2025, 09:35 | 31.8 | 31.8 mg/l |
| 11 Nov 2025, 10:49 | 16.8 | 16.8 mg/l |
| 7 Oct 2025, 11:44 | 18.8 | 18.8 mg/l |
| 1 Sep 2025, 11:04 | 11.8 | 11.8 mg/l |
| 15 Aug 2025, 11:43 | 12.8 | 12.8 mg/l |
| 15 Jul 2025, 09:38 | 18.8 | 18.8 mg/l |
| 9 Jun 2025, 12:46 | 29.8 | 29.8 mg/l |
| 16 May 2025, 11:40 | 18.7 | 18.7 mg/l |
| 24 Apr 2025, 14:33 | 25.9 | 25.9 mg/l |
| 12 Mar 2025, 12:23 | 24.9 | 24.9 mg/l |
| 7 Feb 2025, 10:44 | 18.9 | 18.9 mg/l |
| 24 Jan 2025, 10:49 | 13 | 13 mg/l |
| 5 Dec 2024, 10:44 | 20.8 | 20.8 mg/l |
| 19 Nov 2024, 12:01 | 26.9 | 26.9 mg/l |
| 18 Oct 2024, 11:58 | 18.9 | 18.9 mg/l |
| 23 Sep 2024, 08:59 | 29.8 | 29.8 mg/l |
| 22 Aug 2024, 11:32 | 21.9 | 21.9 mg/l |
| 18 Jul 2024, 09:50 | 16.7 | 16.7 mg/l |
| 18 Jun 2024, 11:25 | 19.8 | 19.8 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
1.6 mg/l
Sampled 21 May 2026, 4 months ago · 31 results banked
Every result (31)
| Sampled | Result as published | Reads as |
|---|---|---|
| 21 May 2026, 09:44 | 1.6 | 1.6 mg/l |
| 1 May 2026, 10:11 | 0.82 | 0.82 mg/l |
| 15 Apr 2026, 10:00 | 0.72 | 0.72 mg/l |
| 8 Apr 2026, 13:47 | 1.1 | 1.1 mg/l |
| 16 Mar 2026, 10:43 | 0.49 | 0.49 mg/l |
| 5 Mar 2026, 14:42 | 0.31 | 0.31 mg/l |
| 18 Feb 2026, 10:14 | 0.082 | 0.082 mg/l |
| 6 Feb 2026, 10:28 | 0.31 | 0.31 mg/l |
| 21 Jan 2026, 10:10 | 1 | 1 mg/l |
| 8 Jan 2026, 13:09 | 0.84 | 0.84 mg/l |
| 17 Dec 2025, 12:38 | 0.46 | 0.46 mg/l |
| 9 Dec 2025, 12:32 | 0.16 | 0.16 mg/l |
| 18 Nov 2025, 09:35 | 0.2 | 0.2 mg/l |
| 11 Nov 2025, 10:49 | 1.4 | 1.4 mg/l |
| 7 Oct 2025, 11:44 | 1.6 | 1.6 mg/l |
| 1 Sep 2025, 11:04 | 2.7 | 2.7 mg/l |
| 15 Aug 2025, 11:43 | 1.9 | 1.9 mg/l |
| 15 Jul 2025, 09:38 | 1.6 | 1.6 mg/l |
| 9 Jun 2025, 12:46 | 1.7 | 1.7 mg/l |
| 16 May 2025, 11:40 | 1.7 | 1.7 mg/l |
| 24 Apr 2025, 14:33 | 1.3 | 1.3 mg/l |
| 12 Mar 2025, 12:23 | 0.42 | 0.42 mg/l |
| 7 Feb 2025, 10:44 | 0.61 | 0.61 mg/l |
| 24 Jan 2025, 10:49 | 0.31 | 0.31 mg/l |
| 5 Dec 2024, 10:44 | 0.19 | 0.19 mg/l |
| 19 Nov 2024, 12:01 | 0.71 | 0.71 mg/l |
| 18 Oct 2024, 11:58 | 0.55 | 0.55 mg/l |
| 23 Sep 2024, 08:59 | 1.4 | 1.4 mg/l |
| 22 Aug 2024, 11:32 | 1.2 | 1.2 mg/l |
| 18 Jul 2024, 09:50 | 0.63 | 0.63 mg/l |
| 18 Jun 2024, 11:25 | 0.73 | 0.73 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
1632 µS/cm
Sampled 21 May 2026, 4 months ago · 31 results banked
Every result (31)
| Sampled | Result as published | Reads as |
|---|---|---|
| 21 May 2026, 09:44 | 1632 | 1632 µS/cm |
| 1 May 2026, 10:11 | 1814 | 1814 µS/cm |
| 15 Apr 2026, 10:00 | 1550 | 1550 µS/cm |
| 8 Apr 2026, 13:47 | 1613 | 1613 µS/cm |
| 16 Mar 2026, 10:43 | 1108 | 1108 µS/cm |
| 5 Mar 2026, 14:42 | 896 | 896 µS/cm |
| 18 Feb 2026, 10:14 | 551 | 551 µS/cm |
| 6 Feb 2026, 10:28 | 862 | 862 µS/cm |
| 21 Jan 2026, 10:10 | 705 | 705 µS/cm |
| 8 Jan 2026, 13:09 | 1941 | 1941 µS/cm |
| 17 Dec 2025, 12:38 | 1319 | 1319 µS/cm |
| 9 Dec 2025, 12:32 | 1380 | 1380 µS/cm |
| 18 Nov 2025, 09:35 | 1239 | 1239 µS/cm |
| 11 Nov 2025, 10:49 | 1670 | 1670 µS/cm |
| 7 Oct 2025, 11:44 | 1797 | 1797 µS/cm |
| 1 Sep 2025, 11:04 | 1665 | 1665 µS/cm |
| 15 Aug 2025, 11:43 | 1784 | 1784 µS/cm |
| 15 Jul 2025, 09:38 | 1667 | 1667 µS/cm |
| 9 Jun 2025, 12:46 | 1861 | 1861 µS/cm |
| 16 May 2025, 11:40 | 1755 | 1755 µS/cm |
| 24 Apr 2025, 14:33 | 1851 | 1851 µS/cm |
| 12 Mar 2025, 12:23 | 1704 | 1704 µS/cm |
| 7 Feb 2025, 10:44 | 1719 | 1719 µS/cm |
| 24 Jan 2025, 10:49 | 1225 | 1225 µS/cm |
| 5 Dec 2024, 10:44 | 1859 | 1859 µS/cm |
| 19 Nov 2024, 12:01 | 1814 | 1814 µS/cm |
| 18 Oct 2024, 11:58 | 1472 | 1472 µS/cm |
| 23 Sep 2024, 08:59 | 1868 | 1868 µS/cm |
| 22 Aug 2024, 11:32 | 1772 | 1772 µS/cm |
| 18 Jul 2024, 09:50 | 1367 | 1367 µS/cm |
| 18 Jun 2024, 11:25 | 1493 | 1493 µS/cm |
Everything measured here
13 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 13 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| Oxygen, Dissolved, % Saturation 9901 | River water | 31 | Jun 2024 – May 2026 | 100% 21 May 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 31 | Jun 2024 – May 2026 | 10.3 mg/l 21 May 2026 |
| Temperature of Water 0076 | River water | 31 | Jun 2024 – May 2026 | 13.9 °C 21 May 2026 |
| pH 0061 | River water | 31 | Jun 2024 – May 2026 | 7.52 21 May 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 31 | Jun 2024 – May 2026 | 0.045 mg/l 21 May 2026 |
| Nitrate as N 0117 | River water | 31 | Jun 2024 – May 2026 | 14.8 mg/l 21 May 2026 |
| Orthophosphate, reactive as P 0180 | River water | 31 | Jun 2024 – May 2026 | 1.6 mg/l 21 May 2026 |
| Conductivity at 25 C 0077 | River water | 31 | Jun 2024 – May 2026 | 1632 µS/cm 21 May 2026 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 31 | Jun 2024 – May 2026 | 160 mg/l 21 May 2026 |
| Ammonia un-ionised as N 0119 | River water | 31 | Jun 2024 – May 2026 | 0.00037 mg/l 21 May 2026 |
| BOD : 5 Day ATU 0085 | River water | 28 | Jun 2024 – May 2026 | 1.9 mg/l 21 May 2026 |
| Nitrite as N 0118 | River water | 31 | Jun 2024 – May 2026 | 0.19 mg/l 21 May 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 31 | Jun 2024 – May 2026 | 15 mg/l 21 May 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.