Syrius S2000 Proline Truckmate.
This satnav does not list all bridges in London even though their bridge heights are shown on Truckers maps, a £6 map out shines a £250 satvnav nor does it update on new road layouts ie M2 upgrade which is now 2 years in operation. Width restrictions are not updated, Wantage being a prime example. You can put in your vehicles length which it ignores and will route you along a residential street as you would get if using a car Tom Tom not good if pulling a 40' trailer. For some strange reason it asks you if are in a car or truck when you switch the unit on as if this is going to make a difference to its routing! It should be programmed NOT to route you on unclassified or B roads unless you destination is on one of these roads and there is absolutely no other way of getting you there. Carry a truckers map and verify your route, do not trust this system blindly!