Blue Collar

White Collar

Mechanical &
Engineering

Compliance

Training

Building futures, together

We are the leading workforce delivery partner to UK infrastructure

Blue Collar

White Collar

Mechanical &
Engineering

Compliance

Training

Social Value

About us

Creating value by driving meaningful change for UK infrastructure

Since 1986, The Danny Sullivan Group has transformed from a traditional labour provider into the UK's leading workforce solutions partner for infrastructure.

Our journey reflects decades of strategic growth, unwavering commitment to our people, and a shared vision of building futures together. We've transformed thousands of lives while helping build the backbone of UK infrastructure.

Our story is written in the career journeys of our people and the lasting impact we've made on the UK together.

1250

Employees

Years in business

1000

Projects worked on

Featured update

Campaign Against Living Miserably

Full length discussion from our team on the ground at the CALM activation at MANOR London. We know the industry stats on suicide; we also know that a proactive approach to better mental health and support each other can help.

This workout was designed to represent the burden people hold (or sandbags) and work together as a unit to overcome something difficult.

We must create a more open dialogue around distress and mental health - we must also engage with the ecology of practices that humans can use to get though and build back.

Our journey

Our story begins in the 1970s, when a young Danny O’Sullivan left his small hometown in south-west Ireland ready to take on London’s construction sector. Arriving in Kilburn, he stepped onto busy building sites and worked his way up, laying the foundations for what would one day become the Danny Sullivan Group.

1986 - Founded

Born in the heart of Kilburn and Cricklewood, against the vibrant backdrop of 1980s Britain, the Danny Sullivan Group was founded in 1986. After years working in construction, Danny recognised a growing need for skilled, reliable labour. He set out to build a company that would meet that need while creating lasting opportunities for others like him.

1986

1990s - Pioneering progress

As the UK infrastructure boomed in the 90s, the Danny Sullivan Group set itself apart by focusing on building people, not just filling roles. We pioneered a new standard in labour supply based on respect, reliability, and real career progression. By partnering with major contractors on high-profile projects, we helped redefine what it means to be a labourer - offering stable work, quality training, and clear career paths.

1990

2012 - A key partner in one of Europe’s largest infrastructure projects

As Crossrail’s tunnels took shape beneath London, the Danny Sullivan Group was proud to supply the skilled teams making it happen. Behind every drill and beam were people whose dedication and expertise helped bring this life-changing project closer to reality — building not just infrastructure, but futures across London.

2012

2019 - A key partner in one of Europe’s largest infrastructure projects

The Danny Sullivan Group continued to support the UK’s most ambitious infrastructure projects - from HPC Marine Works to Mendip Cable and Littlebrook Power Station. Behind the scenes, our people brought expertise, commitment, and pride to every site.

2019

2022 - Leading in technology

We were proud to receive the Tech Innovation Award, recognising how our people are using technology to drive real change on site. From improving safety to streamlining operations, it’s our teams on the ground turning innovation into impact every day.

2022

2025 - Building Futures, Together

We continue to invest in our people, to put them at the heart of everything we do, whilst the build Britain --- Building Futures, Together

2025

Our sectors

At Danny Sullivan we pride ourselves on our unparalleled breadth and depth of services, decades of expertise and an outstanding track record in Construction, Road & Rail, Project Management and Health & Safety

Utilities

Having worked within the industry since our infancy, we pride ourselves in providing a professional and accurate service, matching our client’s needs with skilled and reliable resources.

Tunneling

Our experienced tunnelling operatives bring broad skills to every project phase. Highlights include the A3 Hindhead Tunnel - one of the UK’s longest road tunnels and a major achievement for our team.

Rail

We’ve delivered skilled rail operatives for major projects like Crossrail, Channel Tunnel Rail Link, and Kings Cross. 40% of our workforce is rail-accredited, with extensive experience across the UK network.

Highways

Our operatives are fully trained and qualified in drainage, earthworks, and concrete works. A recent highlight is our involvement in the M25 Widening project, delivering key improvements to highway infrastructure.

Aviation

For over 30 years, we’ve supplied skilled personnel to UK airport infrastructure projects, including major developments at Heathrow, Gatwick, Stansted, Luton, Birmingham, Edinburgh, London City, and Southampton airports.

Nuclear

With our proficient background in providing operatives for nuclear programs, we have the utmost confidence that we can hugely benefit all our client’s complex and demanding projects. We guarantee that we can provide an accredited and experienced workforce.

Our projects

Some examples of key projects we are proud to be a part of.

Hinkley Point C – Tunnelling and Marine Works

Client:

Balfour Beatty

40 connecting vertical shafts

40+ connecting vertical shafts

40% connecting vertical shafts

$40 connecting vertical shafts

$40m connecting vertical shafts

$40bn connecting vertical shafts

£40 connecting vertical shafts

£40m connecting vertical shafts

£40bn connecting vertical shafts

40km connecting vertical shafts

40m connecting vertical shafts

3 tunnels under the seabed

3+ tunnels under the seabed

3% tunnels under the seabed

$3 tunnels under the seabed

$3m

$3bn tunnels under the seabed

£3 tunnels under the seabed

£3m tunnels under the seabed

£3bn tunnels under the seabed

3km tunnels under the seabed

3m tunnels under the seabed

$bn

£m

£bn

Learn more

HMNB Devonport

Client:

Kier, Bam Nuttall JV

600 jobs created

600+ jobs created

600% jobs created

$600 jobs created

$600m jobs created

$600bn jobs created

£600 jobs created

£600m jobs created

£600bn jobs created

600km jobs created

600m jobs created

5500 currently employed by the dockyard

5500+ currently employed by the dockyard

5500% currently employed by the dockyard

$5500 currently employed by the dockyard

$5500m of Plymouth income generated by the dockyard

$5500bn currently employed by the dockyard

£5500 currently employed by the dockyard

£5500m currently employed by the dockyard

£5500bn currently employed by the dockyard

5500km currently employed by the dockyard

5500m currently employed by the dockyard

10 of Plymouth income generated by the dockyard

10+ of Plymouth income generated by the dockyard

10% of Plymouth income generated by the dockyard

$10 of Plymouth income generated by the dockyard

$10m of Plymouth income generated by the dockyard

$10bn of Plymouth income generated by the dockyard

£10 of Plymouth income generated by the dockyard

£10m of Plymouth income generated by the dockyard

£10bn of Plymouth income generated by the dockyard

10km of Plymouth income generated by the dockyard

10m of Plymouth income generated by the dockyard

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Transpennine Upgrade

Client:

Transpire Alliance: BAM Nuttall, Arup and Amey.

76 miles of track

76+ miles of track

76% miles of track

$76 miles of track

$76m miles of track

$76bn miles of track

£76 miles of track

£76m miles of track

£76bn miles of track

76km miles of track

76m miles of track

2.9 project budget

2.9+ project budget

2.9% project budget

$2.9 project budget

$2.9m tunnels

$2.9bn project budget

£2.9 project budget

£2.9m project budget

£2.9bn project budget

2.9km project budget

2.9m project budget

8 tunnels

8+ tunnels

8% tunnels

$8 tunnels

$8m tunnels

$8bn tunnels

£8 tunnels

£8m tunnels

£8bn tunnels

8km tunnels

8m tunnels

Learn more

HS2 Project (High Speed 2)

Client:

HS2 ENABLING WORKS: (CSJV) Costain, Skanska. AREA CENTRAL: C2 & C3 (EKFB JV) Eiffage, Kier, Ferrovial, BAM Nuttall. AREA SOUTH: S1 & S2 (SCS JV) Skanska, Costain, Strabag. C1 (ALIGN JV) Bouygues Construction, Volker Fitzpatrick, Sir Robert McAlpine. AREA NORTH: N1 & N2 (BBV JV) Balfour Beatty, Vinci.

20 of tunnels

20+ of tunnels

20% of tunnels

$20 of tunnels

$20m of tunnels

$20bn of tunnels

£20 of tunnels

£20m of tunnels

£20bn of tunnels

20km of tunnels

20m of tunnels

1.5 total project cost

1.5+ total project cost

1.5% total project cost

$1.5 total project cost

$1.5m months delivery window

$1.5bn total project cost

£1.5 total project cost

£1.5m total project cost

£1.5bn total project cost

1.5km total project cost

1.5m total project cost

14 months delivery window

14+ months delivery window

14% months delivery window

$14 months delivery window

$14m months delivery window

$14bn months delivery window

£14 months delivery window

£14m months delivery window

£14bn months delivery window

14km months delivery window

14m months delivery window

Learn more

A14 Cambridge to Huntingdon improvement scheme

Client:

Integrated Delivery Team (Costain, Skanska and Balfour Beatty, with designers Atkins and Jacobs).

1.5 Highways England Scheme

1.5+ Highways England Scheme

1.5% Highways England Scheme

$1.5 Highways England Scheme

$1.5m Highways England Scheme

$1.5bn Highways England Scheme

£1.5 Highways England Scheme

£1.5m Highways England Scheme

£1.5bn Highways England Scheme

1.5km Highways England Scheme

1.5m Highways England Scheme

21 miles of three lane highway upgrade

21+ miles of three lane highway upgrade

21% miles of three lane highway upgrade

$21 miles of three lane highway upgrade

$21m operatives

$21bn miles of three lane highway upgrade

£21 miles of three lane highway upgrade

£21m miles of three lane highway upgrade

£21bn miles of three lane highway upgrade

21km miles of three lane highway upgrade

21m miles of three lane highway upgrade

300 operatives

300+ operatives

300% operatives

$300 operatives

$300m operatives

$300bn operatives

£300 operatives

£300m operatives

£300bn operatives

300km operatives

300m operatives

Learn more

Rothera Wharf

Client:

Antarctic Infrastructure Modernisation team

74 extension

74+ extension

74% extension

$74 extension

$74m extension

$74bn extension

£74 extension

£74m extension

£74bn extension

74km extension

74m extension

40 project

40+ project

40% project

$40 project

$40m month project duration

$40bn project

£40 project

£40m project

£40bn project

40km project

40m project

18 month project duration

18+ month project duration

18% month project duration

$18 month project duration

$18m month project duration

$18bn month project duration

£18 month project duration

£18m month project duration

£18bn month project duration

18km month project duration

18m month project duration

Learn more

Werrington Grade Separation

Client:

Network Rail

160 project value

160+ project value

160% project value

$160 project value

$160m project value

$160bn project value

£160 project value

£160m project value

£160bn project value

160km project value

160m project value

1100 tonnes of precast concrete box

1100+ tonnes of precast concrete box

1100% tonnes of precast concrete box

$1100 tonnes of precast concrete box

$1100m completion date

$1100bn tonnes of precast concrete box

£1100 tonnes of precast concrete box

£1100m tonnes of precast concrete box

£1100bn tonnes of precast concrete box

1100km tonnes of precast concrete box

1100m tonnes of precast concrete box

2021 completion date

2021+ completion date

2021% completion date

$2021 completion date

$2021m completion date

$2021bn completion date

£2021 completion date

£2021m completion date

£2021bn completion date

2021km completion date

2021m completion date

Learn more

Leeds Flood Alleviation

Client:

Bam Nuttall

87 project value

87+ project value

87% project value

$87 project value

$87m project value

$87bn project value

£87 project value

£87m project value

£87bn project value

87km project value

87m project value

1048 homes protected by the scheme

1048+ homes protected by the scheme

1048% homes protected by the scheme

$1048 homes protected by the scheme

$1048m businesses protected by the scheme

$1048bn homes protected by the scheme

£1048 homes protected by the scheme

£1048m homes protected by the scheme

£1048bn homes protected by the scheme

1048km homes protected by the scheme

1048m homes protected by the scheme

474 businesses protected by the scheme

474+ businesses protected by the scheme

474% businesses protected by the scheme

$474 businesses protected by the scheme

$474m businesses protected by the scheme

$474bn businesses protected by the scheme

£474 businesses protected by the scheme

£474m businesses protected by the scheme

£474bn businesses protected by the scheme

474km businesses protected by the scheme

474m businesses protected by the scheme

Learn more

Tideway East, Central and West

Client:

EAST (CVB JV) Costain, Vinci, Bachy Soletanche. CENTRAL (FLO JV) Ferrovial, Laing O’Rourke. WEST (BMB JV) BAM Nuttall, Morgan Sindall, Balfour Beatty.

25 super sewer

25+ super sewer

25% super sewer

$25 super sewer

$25m super sewer

$25bn super sewer

£25 super sewer

£25m super sewer

£25bn super sewer

25km super sewer

25m super sewer

2023 completion date

2023+ completion date

2023% completion date

$2023 completion date

$2023m

$2023bn completion date

£2023 completion date

£2023m completion date

£2023bn completion date

2023km completion date

2023m completion date

$bn

£m

£bn

Learn more

Deephams Sewerage Treatment Works

Client:

J. Murphy & Sons

989000 population capacity

989000+ population capacity

989000% population capacity

$989000 population capacity

$989000m population capacity

$989000bn population capacity

£989000 population capacity

£989000m population capacity

£989000bn population capacity

989000km population capacity

989000m population capacity

90 reduction in odour

90+ reduction in odour

90% reduction in odour

$90 reduction in odour

$90m

$90bn reduction in odour

£90 reduction in odour

£90m reduction in odour

£90bn reduction in odour

90km reduction in odour

90m reduction in odour

$bn

£m

£bn

Learn more

Luton DART

Client:

VolkerFitzpatrick-Kier JV

2021 completion date

2021+ completion date

2021% completion date

$2021 completion date

$2021m completion date

$2021bn completion date

£2021 completion date

£2021m completion date

£2021bn completion date

2021km completion date

2021m completion date

30 travel time reduced to 30 minutes

30+ travel time reduced to 30 minutes

30% travel time reduced to 30 minutes

$30 travel time reduced to 30 minutes

$30m

$30bn travel time reduced to 30 minutes

£30 travel time reduced to 30 minutes

£30m travel time reduced to 30 minutes

£30bn travel time reduced to 30 minutes

30km travel time reduced to 30 minutes

30m travel time reduced to 30 minutes

$bn

£m

£bn

Learn more

North Bristol Relief Sewer

Client:

John Murphy & Sons

6.5 pipeline

6.5+ pipeline

6.5% pipeline

$6.5 pipeline

$6.5m pipeline

$6.5bn pipeline

£6.5 pipeline

£6.5m pipeline

£6.5bn pipeline

6.5km pipeline

6.5m pipeline

2022 completion date

2022+ completion date

2022% completion date

$2022 completion date

$2022m year long-term sewage strategy

$2022bn completion date

£2022 completion date

£2022m completion date

£2022bn completion date

2022km completion date

2022m completion date

100 year long-term sewage strategy

100+ year long-term sewage strategy

100% year long-term sewage strategy

$100 year long-term sewage strategy

$100m year long-term sewage strategy

$100bn year long-term sewage strategy

£100 year long-term sewage strategy

£100m year long-term sewage strategy

£100bn year long-term sewage strategy

100km year long-term sewage strategy

100m year long-term sewage strategy

Learn more