Pubs for Bus Spotting?

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Pubs for Bus Spotting?
Can anyone give me any advice on pubs with either good beer gardens with roadside views or roads with windows on a very Busy Main road? i couldn't find a good one in Liverpool as the best pubs are off main roads or don't have windows in the right places eg The Dispensary, The Crack..

Personally some favorites of Mine are the Grand Central on Oxford Road in Manchester gets a lot of Stagecoach First and Arriva down there and has good music on but a poor pint
The Berkeley in Wigan
The Cider Tap/The Beer Tap at London Euston Bus Stand Lots of Euston Bus action

Would really like somewhere in St Helens,Liverpool,Bolton and North side of Manchester i guess?

Would prefer a good choice of pints to if possible? Real Cider is a Preferred Drink but unlikely i guess