Groundwork Contractors Enfield Lock
Waltham Cross Waltham Abbey Ponders End Cheshunt Enfield Waltham Holy Cross Chingford Wormley Buckhurst Hill Goffs Oak Winchmore Hill Edmonton Middle Street Loughton Cuffley Woodford Green Palmers Green Southgate Woodford Chigwell Walthamstow Theydon Bois Broxbourne Newgate Street Northaw Snaresbrook Tottenham Nazeing Epping Green East Barnet Epping Wood Green New Southgate Hoddesdon New Barnet Wanstead Friern Barnet Hornsey Whetstone Bayford Potters Bar Little Berkhampstead Leyton Great Parndon Barnet Roydon Totteridge Little Amwell East Finchley Finchley Stapleford Abbots Highgate Essendon Stanstead Abbots Stapleford Tawney Highbury Great Amwell Stratford Hackney South Mimms Ridge Ilford Hertford Hertingfordbury Islington West Ham Mill Hill Cole Green Goodmayes North Mimms Havering atte Bower Ware Bethnal Green Barking East Ham Potter Street Harlow Shoreditch Stanford Rivers Camden Town