Tall looking Robin?

Hello

Was out yesterday taking photos. These are very quick un-edited images for identification purposes, as this site has a small size limit. Taken near Nottingham, UK. 

So this image is what i'd say is a traditional Robin:

But then this showed up, which seemed super tall, but coloured a bit like a Robin? What is this? Is it just the pose or stance making it look different, or not a Robin?