This could be a Trent Barton logo history and there may be more than one of the same logo in parts, one of which due to different image sizes. Some of these logos are now defunct... well mostly the old look logos along with the ones used before the services were withdrawn, Ruddington Connection being a most noteworthy one, the service withdrawn as a result of the phase 2 tram extension to Clifton South. Also Club Class, Hopperbus, Radcliffe Line, Sawley Xprss, Xprss, and Zoom are some other such services to be withdrawn, hence the logos now defunct. Given the withdrawal of Keyworth Connection, Cotgrave Connection and Calverton Connection, new looks involving The Keyworth, The Cotgrave and The Calverton were launched. Worth noting that some new looks can be seen here as a result of routes being operated by Volvos or MMC's etc., so there you go.