THE shortage of HGV drivers is causing more businesses to start using rail freight, while existing users are stepping up their requirements. Tesco has been sending 65,000 containers a year by train but is planning to increase that total to 90,000, and the supermarket chain has also been running special wine trains, while furniture retailer Dunelm is reported to have agreed a lease for a new warehouse at the Daventry rail terminal, creating another 70 jobs. Railfreight operators have responded by increasing their resources.