The figures from CNG Fuels comes as it opens two new refuelling stations, with the support of Ingenious.
Resistance to the take-up of alternative fuel vehicles may be showing signs of decreasing, according to the Iveco dealer.
New stations will increase capacity by 500% to meet demand from hauliers seeking to cut carbon emissions, pollution and haulage costs.
Iveco shows that gas has its place in long distance trunking
European cash and carry and wholesale supplier Transgourment has added five CNG-powered Iveco Stralis NP trucks to its fleet.
Recycling specialist Warrens Group is to refuel its Iveco Eurocargo Natural Power truck with CNG made from its own food waste collections.
Hermes has placed the largest initial order of Compressed Natural Gas (CNG) vehicles in the UK, this year.
Latest Daily trio aim to put operators in the good books of clean air authorities .By Matt de Prez
Internal combustion engines are expected provide a cheaper and cleaner alternative to fully-electric powertrains in heavy trucks, according to industry experts.
The Iveco Stralis NP has been ranked as the most fuel efficient truck when compared to its key rivals, according to tests carried out by European truck magazines.
Waitrose is to operate a fleet of 58 trucks running solely on renewable biomethane in the UK's first large-scale trial of its type.
Ocado is adding 29 Iveco Stralis NP tractor units to its fleet, marking the largest order for single-fuel gas-powered trucks of any manufacturer to-date in the UK.
Arcese has taken delivery of a 6.5-tonne Iveco Daily Natural Power chassis cab, the first gas-powered light commercial vehicle to join its UK fleet.
Northern Gas Networks has replaced two diesel vehicles on its fleet with a pair of 3.5-tonne Iveco Daily Natural Power chassis cabs.
Lawsons has taken delivery of its first gas-powered heavy truck, a 26-tonne Iveco Stralis.
Truck and van manufacturer is seeking to be leader in sustainability with CNG and LNG engines.
Veolia has taken on three CNG-powered Iveco Daily Natural Power vans after winning a new contract with the London Borough of Camden.
Scania has introduced a new 13-litre dedicated gas-powered engine.
The Eurocargo Natural Power is available as a 12-tonne and 16-tonne 4x2 rigid, with a choice of multiple wheelbases from 3,105 mm to 5,670 mm.
Large fleet operators will trial the effectiveness of 81 dedicated gas-powered HGVs.