John Martin-Hoyes Ltd. - Lincoln

Martin Osborne Design Services - Sleaford

K C H Engineering Ltd - Stretton, Oakham

York Sills Ltd - Lincoln

Ermine Engineering Co - Lincoln

Colas - Grantham

C S S Engineering Ltd - Grantham

Pentangle Engineering Services Ltd - Grantham

Cm Civils & Surveys Ltd -

Winfield Engineering Ltd - Grantham