Rose shrub in pot still not in leaf

I bought a Lady Emma Hamilton rose from a local garden center early last autumn and planted in a pot in decent sunshine against a wall. The rose continued growth until the cold set in in late autumn but so far this year the plant has failed to show any growth.
I have 3 other DA roses which have been treated the same as this one and all are doing great. Any tips to revive the plant? Should i lift the plant to check on the roots?
(i'll add a picture later if needed)
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HI Tom, have you looked close for any sigo of life?
Think pic would be helpful
I think there are little buds there, but no leaves ... sigh
Buds are good! Only early..............patience
Thanks! I was just worried as my 3 other roses are well in leaf