Rat sized small mammal

Observation - Rat sized small mammal - UK and Ireland. Description: During a walk along the North Devon coastal path About ten meters in front of me and running away from me was a rat sizes mammal about 20cm long, that was a brown / ginger colour. Not sure about the length of the tail but the most distinctive thing about

During a walk along the North Devon coastal path About ten meters in front of me and running away from me was a rat sizes mammal about 20cm long, that was a brown / ginger colour. Not sure about the length of the tail but the most distinctive thing about it was the way it moved. It moved like a rabbit or a marsupial, placing the two front feet down first then bring the back feet up together. It was smaller than a rabbit and did not have the white or fluffy tail of a rabbit. It was significantly different from the usual mammal seen in the UK to make the person with me (not a great naturalist) remark “what is that”?

Please see the google maps link below of where it was seen.

http://maps.google.co.uk/maps?hl=en&ie=UTF8&ll=51.019667,-4.510038&spn=0.008801,0.027122&t=h&z=16