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<div>As an exercise in measuring OSM<span>’s </span>coverage I have crunched the numbers in GregRS’s CSV output to calculate the number of OSM candidates in each district as a proportion of the number of FHRS entries that the program reports. The figures are
a bit arbitrary and values over 100% are not necessarily wrong. The tool doesn’t cover Northern Ireland.<br>
<br>
The list is:<br>
<br>
1 Tendring 135.07%<br>
2 Gravesham 117.93%<br>
3 Isles of Scilly 117.81%<br>
4 Rushcliffe 117.58%<br>
5 Blackpool 108.66%<br>
6 East Northamptonshire 108.17%<br>
7 Wellingborough 107.94%<br>
8 Guildford 107.82%<br>
9 Erewash 106.40%<br>
10 Broxtowe 106.14%<br>
11 Argyll and Bute 105.49%<br>
12 Islington 104.16%<br>
13 Gedling 98.48%<br>
14 South Cambridgeshire 97.83%<br>
15 Edinburgh 97.60%<br>
16 Nottingham 97.45%<br>
17 Derbyshire Dales 97.07%<br>
18 Cambridge 96.83%<br>
19 Allerdale 94.78%<br>
20 Wychavon 94.78%<br>
21 West Devon 94.47%<br>
22 Bath and North East Somerset 93.83%<br>
23 Oxford 93.09%<br>
24 Aberdeenshire 92.90%<br>
25 Ryedale 90.70%<br>
26 Mid Devon 89.31%<br>
27 Central Bedfordshire 88.97%<br>
28 Westminster 87.99%<br>
29 South Norfolk 87.13%<br>
30 South Lakeland 86.94%<br>
31 Amber Valley 86.34%<br>
32 Birmingham 85.27%<br>
33 Poole 84.66%<br>
34 Melton 83.60%<br>
35 Lancaster 82.43%<br>
36 Southampton 82.31%<br>
37 South Ribble 81.76%<br>
38 Basingstoke and Deane 81.49%<br>
39 Sevenoaks 81.44%<br>
40 Staffordshire Moorlands 81.22%<br>
41 Camden 81.09%<br>
42 South Hams 80.09%<br>
43 Copeland 79.87%<br>
44 Carlisle 79.84%<br>
45 Gateshead 79.72%<br>
46 Hart 79.69%<br>
47 New Forest 79.65%<br>
48 Winchester 79.49%<br>
49 High Peak 79.23%<br>
50 Eden 78.69%<br>
51 South Tyneside 78.59%<br>
52 Rutland 78.34%<br>
53 Perth and Kinross 77.14%<br>
54 Derby 77.05%<br>
55 East Cambridgeshire 76.82%<br>
56 Shetland Islands 76.34%<br>
57 Breckland 76.18%<br>
58 North East Derbyshire 76.15%<br>
59 Bristol 75.91%<br>
60 Huntingdonshire 75.45%<br>
61 Rother 75.34%<br>
62 Sir Ynys Mon - Isle of Anglesey 75.00%<br>
63 Malvern Hills 74.92%<br>
64 Chelmsford 74.79%<br>
65 Hambleton 74.79%<br>
66 St. Albans 74.31%<br>
67 Sutton 73.25% (corrected)<br>
68 Shropshire 72.57%<br>
69 Ashfield 72.34%<br>
70 Richmondshire 71.91%<br>
71 Lambeth 71.70%<br>
72 Sir Ddinbych - Denbighshire 71.52%<br>
73 Tewkesbury 71.37%<br>
74 Runnymede 71.23%<br>
75 Chesterfield 70.80%<br>
76 Stratford-on-Avon 70.73%<br>
77 Fenland 70.50%<br>
78 South Oxfordshire 70.38%<br>
79 Uttlesford 70.05%<br>
80 York 69.92%<br>
81 Exeter 69.82%<br>
82 West Berkshire 69.75%<br>
83 South Gloucestershire 69.64%<br>
84 Cornwall 69.64%<br>
85 Bromsgrove 69.37%<br>
86 Waverley 69.29%<br>
87 Medway 69.28%<br>
88 Wokingham 69.19%<br>
89 North Dorset 68.99%<br>
90 Wyre Forest 68.86%<br>
91 Cherwell 68.73%<br>
92 Highland 68.55%<br>
93 Taunton Deane 68.41%<br>
94 Cotswold 68.40%<br>
95 Mole Valley 68.32%<br>
96 Eastleigh 67.89%<br>
97 Selby 67.86%<br>
98 West Oxfordshire 67.85%<br>
99 St. Edmundsbury 67.69%<br>
100 East Hampshire 67.66%<br>
101 Test Valley 67.52%<br>
102 Chiltern 67.02%<br>
103 Weymouth and Portland 66.84%<br>
104 Wiltshire 66.35%<br>
105 Midlothian 66.10%<br>
106 Rugby 66.00%<br>
107 Maldon 65.99%<br>
108 Na h-Eileanan an Iar 65.84%<br>
109 Bedford 65.69%<br>
110 East Staffordshire 65.37%<br>
111 Leeds 65.30%<br>
112 Waltham Forest 65.24%<br>
113 City of London 65.10%<br>
114 Wakefield 65.03%<br>
115 East Hertfordshire 64.90%<br>
116 Christchurch 64.74%<br>
117 Three Rivers 64.61%<br>
118 Northumberland 64.60%<br>
119 Darlington 64.55%<br>
120 Abertawe - Swansea 64.31%<br>
121 Gwynedd - Gwynedd 64.16%<br>
122 Reading 64.13%<br>
123 Stroud 63.85%<br>
124 Suffolk Coastal 63.84%<br>
125 East Riding of Yorkshire 63.76%<br>
126 North Hertfordshire 63.68%<br>
127 Cheshire East 63.65%<br>
128 Orkney Islands 63.60%<br>
129 Craven 63.60%<br>
130 Mid Suffolk 63.25%<br>
131 Sheffield 63.22%<br>
132 Tamworth 63.13%<br>
133 Norwich 62.95%<br>
134 Solihull 62.82%<br>
135 Warwick 62.75%<br>
136 North West Leicestershire 62.67%<br>
137 West Dorset 62.61%<br>
138 Kensington and Chelsea 62.53%<br>
139 Surrey Heath 62.34%<br>
140 Vale of White Horse 62.33%<br>
141 North Warwickshire 61.97%<br>
142 Hammersmith and Fulham 61.87%<br>
143 Sandwell 61.83%<br>
144 Aylesbury Vale 61.49%<br>
145 Torbay 61.41%<br>
146 Charnwood 61.31%<br>
147 Ipswich 61.26%<br>
148 South Staffordshire 61.21%<br>
149 Ashford 61.00%<br>
150 East Devon 61.00%<br>
151 Hinckley and Bosworth 60.94%<br>
152 Sir y Fflint - Flintshire 60.85%<br>
153 Richmond upon Thames 60.84%<br>
154 South Derbyshire 60.81%<br>
155 North Somerset 60.70%<br>
156 Wandsworth 60.46%<br>
157 Sir Fynwy - Monmouthshire 60.30%<br>
158 Forest Heath 60.27%<br>
159 Great Yarmouth 60.15%<br>
160 Isle of Wight 59.95%<br>
161 Dacorum 59.91%<br>
162 Scarborough 59.80%<br>
163 Forest of Dean 59.54%<br>
164 Teignbridge 59.22%<br>
165 Harborough 58.92%<br>
166 Chichester 58.85%<br>
167 Redditch 58.82%<br>
168 Coventry 58.64%<br>
169 Swindon 58.55%<br>
170 Newcastle upon Tyne 58.48%<br>
171 Worcester 58.28%<br>
172 Cheltenham 57.93%<br>
173 Broadland 57.70%<br>
174 Portsmouth 57.55%<br>
175 Stafford 57.44%<br>
176 Horsham 57.43%<br>
177 West Lothian 57.40%<br>
178 Hackney 57.39%<br>
179 Halton 57.21%<br>
180 Swale 56.91%<br>
181 Bolsover 56.56%<br>
182 Southwark 56.49%<br>
183 North Kesteven 56.06%<br>
184 Tower Hamlets 56.02%<br>
185 Welwyn Hatfield 55.98%<br>
186 Wycombe 55.66%<br>
187 Canterbury 55.32%<br>
188 Spelthorne 54.89%<br>
189 Blaby 54.55%<br>
190 Herefordshire 54.15%<br>
191 Sedgemoor 54.07%<br>
192 Colchester 53.89%<br>
193 Reigate and Banstead 53.47%<br>
194 Newark and Sherwood 53.38%<br>
195 Hertsmere 53.31%<br>
196 Lichfield 53.30%<br>
197 County Durham 53.03%<br>
198 Maidstone 52.81%<br>
199 Aberdeen 52.78%<br>
200 Milton Keynes 52.67%<br>
201 South Northamptonshire 52.40%<br>
202 Cheshire West and Chester 52.10%<br>
203 Tunbridge Wells 52.10%<br>
204 Mendip 52.07%<br>
205 Braintree 51.93%<br>
206 Harrogate 51.62%<br>
207 Bassetlaw 51.60%<br>
208 Glasgow 51.49%<br>
209 Woking 51.29%<br>
210 Babergh 51.14%<br>
211 Walsall 51.13%<br>
212 Bro Morgannwg - the Vale of Glamorgan 51.00%<br>
213 Brent 50.87%<br>
214 East Dorset 50.70%<br>
215 Epsom and Ewell 50.29%<br>
216 Brighton and Hove 49.82%<br>
217 North Norfolk 49.77%<br>
218 Sir Gaerfyrddin - Carmarthenshire 49.75%<br>
219 Stockton-on-Tees 49.68%<br>
220 Bournemouth 49.58%<br>
221 Kettering 49.55%<br>
222 Boston 49.32%<br>
223 Conwy - Conwy 49.15%<br>
224 Wirral 49.01%<br>
225 Haringey 48.84%<br>
226 Tonbridge and Malling 48.72%<br>
227 Telford and Wrekin 48.71%<br>
228 Sefton 48.68%<br>
229 King's Lynn and West Norfolk 48.49%<br>
230 Powys - Powys 48.38%<br>
231 East Lothian 48.31%<br>
232 Ribble Valley 48.06%<br>
233 Daventry 48.05%<br>
234 Newcastle-under-Lyme 47.93%<br>
235 Leicester 47.72%<br>
236 Shepway 47.59%<br>
237 Manchester 47.57%<br>
238 Lewisham 47.47%<br>
239 Tandridge 47.47%<br>
240 Luton 47.42%<br>
241 Kirklees 47.39%<br>
242 Torridge 46.97%<br>
243 Bury 46.75%<br>
244 North Devon 46.75%<br>
245 Harrow 46.67%<br>
246 Rushmoor 46.63%<br>
247 Pen-y-bont ar Ogwr - Bridgend 46.38%<br>
248 Stockport 46.33%<br>
249 Sunderland 46.33%<br>
250 Wealden 46.25%<br>
251 Purbeck 46.24%<br>
252 Stevenage 46.06%<br>
253 Caerdydd - Cardiff 46.02%<br>
254 Sir Ceredigion - Ceredigion 46.02%<br>
255 Barrow-in-Furness 45.89%<br>
256 Fareham 45.86%<br>
257 Windsor and Maidenhead 45.75%<br>
258 Havant 45.44%<br>
259 Bromley 45.40%<br>
260 Elmbridge 45.30%<br>
261 Fylde 45.14%<br>
262 West Lindsey 44.72%<br>
263 Mansfield 44.69%<br>
264 Crawley 44.56%<br>
265 East Lindsey 44.54%<br>
266 Dartford 44.44%<br>
267 Chorley 44.35%<br>
268 Rochford 44.12%<br>
269 East Dunbartonshire 44.11%<br>
270 West Lancashire 43.97%<br>
271 Dudley 43.96%<br>
272 Broxbourne 43.30%<br>
273 South Holland 42.97%<br>
274 Barnsley 42.92%<br>
275 Oadby and Wigston 42.81%<br>
276 Wrecsam - Wrexham 42.59%<br>
277 Kingston upon Hull 42.42%<br>
278 West Somerset 42.40%<br>
279 Bracknell Forest 42.28%<br>
280 East Renfrewshire 42.27%<br>
281 Castell-nedd Port Talbot - Neath Port Talbot 41.35%<br>
282 Wyre 41.27%<br>
283 Fife 41.05%<br>
284 South Bucks 41.03%<br>
285 Casnewydd - Newport 41.00%<br>
286 Barnet 40.68%<br>
287 Trafford 40.54%<br>
288 Lewes 40.52%<br>
289 Brentwood 40.52%<br>
290 Harlow 40.48%<br>
291 Thanet 40.37%<br>
292 Greenwich 40.17%<br>
293 Arun 40.14%<br>
294 Thurrock 40.10%<br>
295 Bradford 39.99%<br>
296 Gloucester 39.97%<br>
297 Angus 39.75%<br>
298 South Ayrshire 39.67%<br>
299 Barking and Dagenham 39.48%<br>
300 Hartlepool 39.46%<br>
301 Scottish Borders 39.35%<br>
302 North Tyneside 39.28%<br>
303 Liverpool 39.23%<br>
304 South Kesteven 39.21%<br>
305 Mid Sussex 39.16%<br>
306 Tameside 38.94%<br>
307 Newham 38.93%<br>
308 Wolverhampton 38.83%<br>
309 Moray 38.45%<br>
310 Plymouth 38.39%<br>
311 South Lanarkshire 38.33%<br>
312 Dover 38.22%<br>
313 Epping Forest 38.08%<br>
314 Middlesbrough 37.72%<br>
315 Lincoln 37.70%<br>
316 Caerffili - Caerphilly 37.57%<br>
317 Merton 37.08%<br>
318 Croydon 37.00%<br>
319 South Somerset 36.84%<br>
320 Enfield 36.54%<br>
321 Ealing 36.48%<br>
322 Stoke-on-Trent 36.44%<br>
323 Hounslow 36.12%<br>
324 North Lanarkshire 35.70%<br>
325 Rhondda Cynon Taf - Rhondda Cynon Taf 35.61%<br>
326 Kingston upon Thames 35.56% (16/12)<br>
327 North Lincolnshire 35.39%<br>
328 Dundee 35.01%<br>
329 Sir Benfro - Pembrokeshire 34.95%<br>
330 Gosport 34.93%<br>
331 Hyndburn 34.88%<br>
332 Hastings 34.63%<br>
333 North East Lincolnshire 34.53%<br>
334 Waveney 34.42%<br>
335 Northampton 34.34%<br>
336 Bexley 34.26%<br>
337 Corby 33.71%<br>
338 Watford 33.59%<br>
339 Preston 33.45%<br>
340 Southend-on-Sea 33.26%<br>
341 Calderdale 32.53%<br>
342 Slough 32.35%<br>
343 North Ayrshire 32.06%<br>
344 Hillingdon 31.54%<br>
345 Nuneaton and Bedworth 31.36%<br>
346 Pendle 31.01%<br>
347 Falkirk 31.01%<br>
348 Redcar and Cleveland 30.91%<br>
349 Adur 30.64%<br>
350 Rotherham 30.46%<br>
351 St. Helens 29.95%<br>
352 Warrington 29.91%<br>
353 Tor-faen - Torfaen 29.53%<br>
354 Blackburn with Darwen 29.37%<br>
355 Peterborough 29.15%<br>
356 Salford 29.13%<br>
357 West Dunbartonshire 29.10%<br>
358 Cannock Chase 28.77%<br>
359 Knowsley 28.60%<br>
360 Redbridge 28.54%<br>
361 Merthyr Tudful - Merthyr Tydfil 27.64%<br>
362 East Ayrshire 27.62%<br>
363 Rochdale 27.18%<br>
364 Rossendale 27.16%<br>
365 Havering 26.80%<br>
366 Worthing 25.83%<br>
367 Oldham 25.74%<br>
368 Renfrewshire 25.52%<br>
369 Bolton 25.21%<br>
370 Wigan 25.07%<br>
371 Basildon 23.95%<br>
372 Clackmannanshire 23.84%<br>
373 Inverclyde 22.45%<br>
374 Doncaster 21.91%<br>
375 Castle Point 19.71%<br>
376 Burnley 17.98%<br>
377 Eastbourne 16.24%<br>
<br>
--<br>
Andrew<br>
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