Ok just to update this thread... the company that previously did the decals has not responded to any of my requests for a second batch but as luck would have it I was on my lunch break last week when I saw a decals company van drive past. I've noted down the company and will contact them asap. Will probably be better to go with somewhere local to me because that way I can just nip in and pick up/request decals as and when there is a need for them.