- Nimmo & Olsen Ltd
- 01642 232674 - 20-22 Marsh Road, Middlesbrough, Cleveland, TS1 5LB
- Traditional Windows
- 01287 619991 - Unit 8, Morgan Drive, Guisborough, Cleveland, TS14 7DH
- Ultimate Windows & Conservatories
- 01642 246511 - Unit 6, Murdock Road, Middlesbrough, Cleveland, TS3 8TB
- ABI Canopies
- 01723 377114 - 262 Scalby Rd, Scarborough, YO12 6EA
- Conservatory Cafe
- 0870 8148358 - 70 Newborough, Scarborough, North Yorkshire, YO11 1ET
- Minster Windows & Conservatories
- 0845 3736600 - Thirsk, YO61 1XX
- Sanctuary Conservatories
- 0800 0283488 - 1 The Mount, Selby, North Yorkshire, YO8 9BH
- Welcome Windows
- 01757 708787 - 68 Gowthorpe, Selby, North Yorkshire, YO8 4ET
- Windsor Conservatories Windows & Doors
- 01757 213838 - Waterside Indust Pk Canal Rd, Selby, North Yorkshire, YO8 8AG
- Harrogate Conservatory
- 01423 705564 - 6 Waterwork Cottages, Lefthouse, Harrogate, HG3 5SD
- Natural Conservatories (Ribblesdale) Ltd
- 01729 824154 - Unit 1A The Sidings Industrial Estate, Settle, North Yorkshire, BD24 9RP
- Unique Conservatory Roofs
- 01642 247196 - Unit 8 Snowdon Rd, Middlesbrough, Cleveland, TS2 1DY
- Cleveland Conservatories
- 01642 881888 - Unit 8 Snowdon Rd, Middlesbrough, Cleveland, TS2 1DY
- Cleveland Conservatories
- 01642 881888 - Unit 8 Snowdon Rd, Middlesbrough, Cleveland, TS2 1DY
- Pavillion Conservatories
- 01642 458600 - 13 Bessemer Court, Middlesbrough, Cleveland, TS6 7EB
- Niddal Windows
- 01423 866588 - 13 Iles Lane, Knaresborough, North Yorkshire, HG5 8DY
- Natural Conservatories
- 01729 823126 - 2 Albert Hill, Settle, BD24 9HE
- Rowlands Conservatories
- 0845 8154327 - 59 Doncaster Road, Selby