Top 150 consultants

Top 50 Engineers

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2015 rank 2014 rank Firm UK chartered engineering staff: Total UK chartered engineering staff: Civil engineers UK chartered engineering staff: Structural engineers UK chartered engineering staff: Mechanical engineers UK chartered engineering staff: Electrical engineers UK chartered engineering staff: Other Non-chartered /technical engineers Total UK chartered staff: 2014 Total UK chartered staff: 2015 Total UK staff: 2014 Total UK chartered staff: 2015 Offices: UK Offices: Worldwide
32Mott MacDonald*1,8931,0531682243231261,4842,8473,0335,5365,93338192
4WSP | Parsons Brinckerhoff*1,65137013358611,0290N/A1,7772,5225,15036527
88Waterman Group5913051345129723875495919951,1381419
99Ramboll UK*56015014545251953924985781,0541,27724300
1110BuroHappold Engineering368359544281663493123748941,007724
1211Hoare Lea318200106122723043186977541114
14Opus International Consultants (UK) 16875580035198711814104741286
1616Hilson Moran145006647324414114520322535
1717TPS Consult13670351310817817629629789
24=23=Curtins Consulting71314000815877712362811111
24=AKT II711655000133617119222722
2627=Pick Everard572171712081931974534701010
2833Clancy Consulting 54172674694954154162912
2936Ridge & Partners528141713-61196226370434910
31Clarkebond (UK) 35303835727333
3235Hulley & Kirkwood2918119344311411388
33Ellis and Moore 26621000132426242611
3426Hill International UK2510343515708216719980
35National Design Consultancy240012120193524855833
36Alan Conisbee and Associates 23512023729233
37=40Alan Baxter2131600233252211612411
40PEP Civil & Structures 1831571718303211
41Frankham Consultancy Group175543032697122823755
42=45=Foster + Partners154434523624131,2091,236220
42=Jenkins & Potter15612000261819425233
42=Crofton Design1513740271515424833
4650CalfordSeaden 131345021737220722766
47=Elementa Consulting12753612234957215
49=Faithful+Gould 116102286937009961,0072465
50=Westlakes Engineering11651411333933

Methodology and notes

Barbour ABI, provider of construction intelligence services and Building sister company, contacted more than 500 firms for this year’s Building Top Consultants’ Survey. They were sent a survey form asking for details on the number of chartered staff, non-chartered and technical staff, and domestic and worldwide fee incomes. Firms are ranked according to total UK chartered staff, and for QSs, architects, engineers and project manager by chartered staff in each respective discipline. Practices were also asked questions relating to: staff recruitment, wage patterns, margins, areas of work, and work expectations.

The survey relies upon firms completing and returning the annual survey form. For a variety of reasons firms sometimes decide not to take part. Only those firms that complete and return the survey form are included in the survey. Firms with any questions about the survey, or that wish to be included in the 2016 survey, should contact Barbour ABI
( or by email to


  • Atkins figures reflect acquisition of Terramar AS and divestment of Atkins Poland and Atkins Portugal
  • Aecom figures reflect merger with URS in October 2014
  • Mott Macdonald figures reflect acquisition of JN Bentley, and include Franklin + Andrews Limited
  • Arcadis figures reflect acquisition of Hyder Consulting in October 2014 and incorporation of EC Harris, which was ranked 1 in the top surveyors table in 2014
  • WSP figures reflect the acquisition of Parsons Brinckerhoff
  • Turner & Townsend figures reflect acquisition of Thinc Group Holdings Pty Limited
  • CBRE figures reflect acquisition of Johnson Controls, and 2015 numbers include 4,000 Norland staff in UK and 10 Norland offices
  • Ramboll figures reflect acquisition of Environ UK Ltd
  • Gleeds 2015 total staff figures include temporary and long-term freelance staff
  • WYG figures reflect acquisition of FMW Consultancy and Alliance Planning
  • HurleyPalmerFlatt figures reflect acquisition of 51% of Andrew Reid and Partners
  • AHR figures reflect July 2014 demerger from Aedas, with latest financials relating to first year as AHR
  • TP Bennett office figure includes 29 affiliate offices
  • Aukett Swanke figures reflect acquisition of 80% of John R Harris & Partners
  • McAndrew Martin figures reflect acquisition of Brunel Design Group and Veness Chartered Surveyors
  • K2 Consultancy figures reflect acquisition of Rider Hunt (London)
  • Fairhurst formerly W A Fairhurst & Partners
  • RPP trading as Rex Procter & Partners
  1. Un-audited
  2. Approx
  3. Forecast
  4. 18 months
  5. Including project offices