The group is to enlist the help of its lorry drivers to distribute leaflets in the run-up to the week, on June 4-10. The leaflets will include ideas on how retailers can create a themed week of activities.
Londis retailers will be provided with posters and stickers to display the message, 'My Shop is Your Shop - Local and Proud of it'. An additional two million consumer leaflets will also be available to retailers to distribute to customers.
And MSYS organisers are also busy ensuring this year's event, which is spread over a whole week for the first time, is the biggest yet.
A total of 12 major brands, including Pedigree, Guinness and Birds Eye, will support money-off vouchers appearing in special NIW features in the Daily Mirror and Daily Record just ahead of the main event in June.
More special NIW kits of T-shirts, caps and posters, balloons and badges have been produced, with 5,000 due to be distributed at the end of May. Retailers are also being encouraged to host a street party throughout the week. The popular media training also returns, with professional broadcasters offering retailers coaching at a special event in Birmingham.
MBL acting marketing director Ross Halliday gave his backing: "Many retailers support their communities, whether it's offering home deliveries, working with the local primary school or sponsoring the local football team. NIW is all about harnessing these activities under a PR umbrella and to say thank you to customers for supporting their local store."