The Construction Products Association’s Summer forecasts anticipate growth for the whole of 2018 to fall 0.6 percent, before accelerating to 2.3 percent in 2019 and 1.9 percent in 2020, with house builders the primary drivers of growth for the whole industry.

In private housing, first-time buyer demand, enabled by the government’s Help to Buy scheme, continues to boost sentiment and encourage an increase in housebuilding activity outside London. The sector’s output is forecast to rise five percent in 2018 and two percent in 2019.

The infrastructure sector also remains a primary driver of growth for the whole construction industry, with output forecast to hit a historic high of £23.6bn by 2020, driven by large projects such as HS2 and Hinkley Point C. However, the sector will be hoping government will push to ensure delivery on the ground with work on both projects already significantly delayed.

Without the forecast growth in infrastructure and private housing activity, total construction output would fall by three percent in 2018 and remain flat in 2019.

The demise of Carillion resulted in a poor performance for the industry at the start of the year and, combined with the bad weather, lost UK construction £1bn of work. It is estimated 60 percent of this work may be recovered, but Carillion’s collapse will cause further delays at two major hospitals as work on the £335m Royal Liverpool University and Birmingham’s £350m Midland Metropolitan hospitals is on hold until at least 2019.

Brexit uncertainty continues to drive the sharpest decline for construction in the commercial sector, particularly felt in the offices sub-sector which is expected to fall 20 percent in 2018 and a further 10 percent in 2019. Meanwhile, the shift to online shopping is causing woes for the high street, with new retail construction expected to fall by 10 percent this year.

Noble Francis, economics director at the Construction Products Association, said: “Clearly, the first quarter of the year was difficult for the industry due to the demise of Carillion and the bad weather. Things improved markedly in the second quarter due to a catch-up in work as we would have expected but, overall, it’s mixed fortunes for contractors at the moment. On the positive side, house builders are keen on accelerating building rates outside of London and that is expected to be enough to offset sharp falls in house building in the capital.

“Firms working on major infrastructure projects also have a lot of work in the pipeline. Infrastructure output is forecast to rise by three percent in 2018 and 13 percent in 2019. This growth is highly dependent on large projects such as HS2 and Hinkley Point C, the first of the new nuclear power stations but, as ever, there remain concerns about government’s ability to deliver infrastructure projects without the cost overruns and delays that we have seen on Crossrail and HS2 recently.

“On the negative side, the elephant in the room is clearly Brexit uncertainty, which has had a big effect on international investment, especially where it is high up-front investment for a long-term rate of return, which is now highly uncertain. It badly affects demand in sectors such as prime residential in London, commercial offices towers and industrial factories, which is dependent on manufacturing.

“Overall in construction, there is forecast to be a slight fall in activity, of -0.6 percent, in 2018 after five consecutive years. However, in 2019, we are anticipating growth of 2.3 percent due to house building and infrastructure.”