If you need a banner, there's a place in Maghull I know that does them very cheaply and excellent quality too. Usually a very quick turnaround and they do stickers, vinyling cars etc. too. They do all Liverpool's Police vehicles.
Caractor Graphics (I usually deal with Iain)
330 Moorhey Road
Maghull
Liverpool
L31 5LR
Merseyside
Tel: 0151 520 0500.