The current members of Cottageline are:

Brecon Beacons, Wales – Brecon Beacon Holiday Cottages
Northumberland  РCoquet Cottages
Cornwall – Cornish Traditional Cottages
Derbyshire & The Peak District – Derbyshire Country Cottages
Scotland – Discover Scotland
Dorset – Dorset Coastal Cottages
West Wales – FBM Holidays
South Wales – Home from Home
North Cornwall – John Bray Cornish Cottages
Lake District – Lakelovers
Cotswolds – Manor Cottages
North Wales – North Wales Holiday Cottages
UK Wide – Scotts Castle Holidays
The South West – Toad Hall Cottages & New Forest Cottages
6 Agencies Nationwide – The Original Cottage Company
Kent and Sussex Holiday Cottages
Marsdens Cottage Holidays
Norfolk Country Cottages
Suffolk Secrets
Yorkshire Holiday Cottages
Wales Cottage Holidays

Cottageline are also members of HHA (The Holiday Home Association) – formerly EASCO.