People are finding them faster than I can type!!
Welcome to the H.R. Kay99 for identifying No. 48 in record time as the Shire Hall, Monmouth.
1 Kirby Muxloe Castle - identified by Still Looking;
2 Ravensworth Castle - identified by Trish
3 Inverewe Lodge, Poolwe, Rosshire - identified by Yorkslass
4 Burnham Beeches Manor, Buckinghamshire - identified by Trish; Side building (separate photo) identified by Mosiefish; Royal connection identified by Jools
5 Thurso Castle, Caithness, Scottish Highlands - identified by Still Looking
6 Aldermaston Court, Newbury, Berks - identified by Ruskie and Wiggy
7 Hall Place, Leigh Kent - identified by Yorkslass
8 Cromer Lighthouse, Cromer, Norfolk - identified by Roopat
9 Tilgate Mansion, Crawley, South Yorkshire - identified by Yorkslass
10 Balhomie, Cargill Perthshire - identified by Yorkslass
11 The Rookery, Bromley Common, Bromley - identified by Still Looking
12 Not yet identified (house with tower)13 Skeabost House, Isle of Skye - identified by Jools
14 Jersey Lighthouse - identified by Malky
15 Glenlyon Estate, Fortingall, Perthshire - identified by Still Looking
16 Fountains Abbey, North Yorkshire - identified by JenB; KGarrad and SueTeakle.
17 Herstmanceux Castle, Sussex - identified by Jayhen6
18 Pevensey Castle, East Sussex - accidentally discovered by me
while researching WAI 17
19 Not yet identified (Mock Tudor House)
20 Not yet identified (Thatched farm)21 St Andrew's church, Alexander Park, Muswell Hill - identified by Mosiefish
22 Bradenham Manor c1670s - identified by Jool
23 West Norfolk and Lynn Hospital, Norfolk - identified by Jool
24 Edinburgh School of Art - identified by Yorkslass
25 Lichfield Cathedral, Staffordshire - identified by Malky and JenB in about 5 seconds flat!
26 St Katherine's, Holt, Wiltshire - identified by Little Nell
27 St Mary and St Lambert, Stonham Aspal, Suffolk - identified by Trishanne (Pat)
28 Not yet identified (Country church)29 St Mary the Virgin, Warmington, Northhamptonshire - identified by Sugarbakers
30 Not yet identified - Possible overseas location31 St Michael's, Theydon Mount, Essex - identified by JenB and hubby
32 St Mary The Virgin church, Betteshanger, Kent - identified by Spidermonkey
33 St Bartholomews, Coventry Road, Bethnal Green - groundwork done by Sugarbaker; identified by me
34 Parish Church, Earnley, Chichester, West Sussex - identified by Fiddlerslass
35 St Peter's Church, Morden - identified by Spidermonkey
36 St Lawrence, Castle Rising, Norfolk - identified by Little Nell
37 St Peter's Church, Catcott, Somerset - identified by Roopat
38 All Saints Church, Billockby, Norfolk - identified by Jaywit
39 Not yet identified (quirky chapel)40 St Peter & St John the Baptist, Barnsley, West Yorkshire - identified by Mosiefish
41 St.Andrew's Church, Aldringham, Suffolk - identified by Janan
42 St Nicholas', Dereham, Norfolk - identified by dgibbins
43 Church of St Helen and All Saints, Wykeham, North Yorkshire - identified by Malky
44 St James the Less-Pangbourne, Berkshire - identified by djm297
45 Not yet identified46 Monnow Bridge, Monmouthshire, Wales - identified by Mike in Cumbria
47 St Mary's, Erwarton, Suffolk - identified by dgibbins
48 Shire Hall, Agincourt Square, Monmouth, Wales - identified by Kay99
49 Not yet identified - City church