Your plant looks like:

Roseum Elegans:
{{gwi:389732}}

or Caroline Allbrook:
{{gwi:392705}}

Here is a link that might be useful:

Wow, thanks Rhodyman. How on earth did you get that link in the post? I played for ages last night and got nowhere. Also I think Caroline Allbrook looks the closest...would a picture showing more leaves help?

Yours is 'P.J.M.' or one of its friends.

To post a picture use:

without the space after the PJM Elite:
{{gwi:392706}}

PJM:
{{gwi:392707}}

Britgardener -

I agree with Bboy based on time of year (assuming it's been blooming now or recently) as well as size and color of leaves that it's PJM or something in that group.