Links to useful websites.

The British Board of Agrément
HAPAS approval certificates 
http://www.bbacerts.co.uk/

Specification for Highway Works – Clause 711
Inlaid Crack Sealing Systems such as Jointmaster (See Page 8 of this 42 page pdf)
http://www.standardsforhighways.co.uk/ha/standards/mchw/vol1/pdfs/MCHW%20700.pdf

The Transport Research Laboratory
Transport reports to purchase and download 
http://www.trl.co.uk/

Highways England
Motorways and trunk roads
https://www.gov.uk/government/organisations/highways-england

Trunk Road & Motorway Live Traffic
http://www.trafficengland.com/

Weather forecast
http://www.metoffice.gov.uk/public/weather/forecast

Also of interest