- Burghley Estate (Forestry)
- 01780 756963 - The Maltings, Wothorpe, Stamford, Lincolnshire, PE9 3JE
- Horticulture Research International
- 01205 723477 - Willington Road, Kirton, Boston, Lincolnshire, PE20 1EP
- Simpson Arboriculture
- 01400 230416 - Heathland House, Ancaster, Grantham, Lincolnshire, NG32 3RJ
- Adzhill
- 01522 720045 - Broughton La Fm Broughton La, Harmston, Lincoln, Lincolnshire, LN5 9SY
- William Sinclair Horticulture
- 01522 537561 - Firth Road, Lincoln, Lincolnshire, LN6 7AH
- C M W Horticulture
- 01430 422222 - Stonepit Road, South Cave, Brough, North Humberside, HU15 2BY
- Ju & Sk Vicary
- 01430 872292 - Bridgeholme Farm, Holme Road, Yorkshire, YO43 4LY
- Landforce Ltd
- 01476 515408 - Houghton Road, Grantham, Lincolnshire, NG31 6JE
- Stump Busters
- 01652 648864 - Jumile Grayingham Road, Gainsborough, North Lincs
- Lindsey Tree Services Ltd
- 01472 826071 - The Barn, Cheapside, Waltham, Grimsby, South Humberside, DN37 0JF
- Lindsey Tree Services
- 01472 821812 - Unit 4, Lancaster Gate, Holton-le-Clay, Grimsby, South Humberside, DN36 5YS
- Gedney Hill Tree Services
- 01945 700686 - The Railway Tavern South Eau Bank, Spalding, Lincs, PE12 0QL
- Arb-core Tree Services
- 01775 821553 - 29 Northorpe Road, Donington, Spalding, Lincolnshire, PE11 4XU
- Poplar Tree Services
- 01522 687379 - 8 Gunby Ave, Lincoln, LN6 0AW
- HGM Tree & Garden Services
- 01775 713053 - 23 Green Lane, Spalding, PE11 2YD
- The Tree Doctor
- 01775 767978 - Pinchbeck Road, Spalding, Lincs, PE11 1QF
- Tommy Plummer
- Witham On The Hill, Bourne, Lincolnshire, PE10 0JH
- P&p French Tree Services
- 01529 462120 - Foxhall Barn Asgarby, Sleaford, Lincolnshire, NG34 9QE
- Tree And Garden Services
- 07843 794410 - Elsinore, Cottagers Plot. Laceby, Grimsby, Lincolnshire, DN37 7DX
- James Kendall
- 10 Church Street, Market Rasen, Lincolnshire, LN8 3ET
- Brookdale Tree Services
- 0845 2635542 - 15 Oak Road Healing, Grimsby, Lincolnshire, DN41 7RJ
- Marshall Tree Care Ltd.
- 01522 788031 - Bridge Farm, Haddington, Lincoln, Lincolnshire, LN5 9EF
- Eilise Somers
- Bridge Farm, Haddington, Lincoln, Lincolnshire, LN5 9EF
- All Seasons Tree Services
- 01754 890224 - 2 Chalk Pit Lane, Candlesby, Lincolnshire, PE23 5SE
- Special Branch Tree Surgeons
- 07708 718501 - 5 Hallam Close, Barrow-upon-Humber, North Lincolnshire, DN19 7FD
- T.j.s Tree Services Ltd
- 01522 805109 - 27 Saxilby Road, Lincoln, Lincolnshire, LN6 5TY
- Treesnatchers
- 01526 321222 - Sleaford, Sleaford, Lincs, LN4 3JG
- Woodserve
- 01652 618598 - North Carr Lane, Saxby All Saints, Brigg, Lincolnshire, DN20 0QH
- Hgm
- 01775 713053 - 34, Green Lane Spalding Lincolnshire, Spalding, Lincolnshire, PE11 2YD
- Castle Tree Care
- 01507 524912 - 50 College Park, Horncastle, Lincolnshire, LN9 6RE
- R A Hackett
- 01754 810013 - Orby Road Burgh Le Marsh, Skegness, Lincolnshire, PE24 5JD
- Mike Finch Tree Services
- 0113 2263916 - Albany Road, Louth, Lincolnshire, LN11 8ET
- Finch Tree Services
- 01507 602220 - Albany Road, Louth, Lincolnshire, LN11 8ET
- Green2go
- 01775 760661 - 33 Balmoral Avenue, Spalding, Lincolnshire, PE11 2RN
- East Midlands Tree Care
- 01400 281893 - Park Road, Allington, Grantham, Lincs, NG32 2EB
- Oakwick
- 01526 869268 - North Kyme, Lincoln, Lincs, LN4 4DP