Below are some links to companies offering sash window repair, replacement and manufacturing services Nationwide in the UK:

Ark Stained Glass & Leaded Lights Ltd
The Oaks, Callow, Hereford, Herefordshire HR2 8DF
Tel: 01981 540 330

Askwith Window Company
The Workshop, Side Copse, Otley, West Yorkshire LS21 1JE
Tel: 01943 461083
Mobile: 07860 383357

Bygone Timber Sash Windows
4 Crittall Road, Witham, Essex CM8 3DR
Tel: 0800 591854

Carlton Die Castings Ltd
88 Greenhill Road, Paisley PA3 1RD
Tel: 0141 887 8355
Fax: 0141 840 1774

Desofil (U.K.) Ltd
Unit 5 Venture Court, 7 Gosforth Close, Middlefield Industrial Estate, Sandy, Bedfordshire SG19 1RB
Tel: 01767 682446
Fax: 01767 683898
Mobile: 07917739408

DIY Sash Window Ltd
25 Ardingly, Bracknell, Berkshire RG12 8XR
Fax: 01344 319 758
Mobile: 07881 920 993

Foxdiy.com
Homecrafts (York), 61 Lawrence Street, York, Yorkshire YO10 3BU
Tel: 01904 412 354
Fax: 01904 430 404

Kierson Sash Window & Timber Restoration
Blackstopes Farm, Bracken Lane, Retford, Nottinghamshire DN22 0PJ
Tel/Fax: 01777 706 363
Mobile: 07711 718 601

Mellott Windows Ltd
Castlebar Road, Ballinrobe, Mayo, Ireland
Tel: 00353 94 954 1053
Fax: 00353 1 289 9235
Mobile: 00353 8728 48029

Mighton Products Ltd
P.O. Box 1, Saffron Walden, Essex CB10 1QJ
Tel: 0845 0944 329

Mill House Window Workshop
Bendish Farm, Bendish, Hitchin, Herts, SG4 8JD.
Tel: 01438 871 753.
Fax: 01438 871977

Mumford & Wood Ltd
Tower Business Park, Kelvedon Road, Tiptree, Essex CO5 0LX
Tel: 01621 818 155
Fax: 01621 818 175

PortaScreen
Yalding, Maidstone, Kent ME18

Pickard Hardware Ltd
Airedale Road, Keighley, West Yorkshire BD21 4LW
Tel: 01535 665 765
Fax: 01535 681 919

Preservation Windows
Unit 6, The Shades Building, Woodilee Industrial Estate, Kirkintilloch, Glasgow G66 3UU
Tel: 01417 766 186

Priors Reclamation Ltd
Unit 65, Ditton Priors Industrial Estate, Ditton Priors, Bridgnorth, Shropshire WV16 6TG
Tel: 01746 712 450

Sashpole.com
18 Buxton Road West, Disley, Stockport, Cheshire SK12 2AE
Tel: 0161 4285525
Fax: 0161 2614765
Mobile: 07908 522520

Sash Upgrades
Unit 7, High March Ind. Estate, Daventry, Northamptonshire NN11 4PH
Tel: 01327 314 441
Fax: 01327 651 267

Traditional Hardware Direct Ltd
Unit 34, Darwen Enterprise Centre, Railway Road, Darwen, Lancashire BB3 3EH
Tel: 01254 773 945
Fax: 05601 120 212
Mobile: 07757 251 384

United Windows Ltd
Farroway Depot, Mill Lane, Billinghay, Lincolnshire LN4 4EN
Tel/Fax: 01526 861285

Ventrolla Ltd
Ventrolla House, Crimple Court, Hornbeam Business Park, Harrogate, North Yorkshire HG2 8PB
Tel: 0800 378 278 & 01423 859 323
Fax: 01423 859 321

Wimbledon Sash
Unit 4, Riverside Business Park, 16 Lyon Road, South Wimbledon, Greater London SW19 2RL.
Tel: 020 8417 1112.
Fax: 020 8417 1117.
Mobile: 0787 581 3416

Woodstock GB Direct Ltd
Suite 4 Troy Industrial Estate, Jill Lane, Sambourne, Redditch, Worcestershire B96 6ES
Tel: 01527 893 323 & 01527 893 083
Fax: 01527 894 194
Mobile: 07531 012 253