[Matt446574]

Hi as i'm sure you can gather from the title i think i have made a mistake in one of my trainspots and it's driving me crazy!! I had just finished at my particular spot and as i walked away a train came so i quickly jotted down the number and off i went. The number i wrote down was 67133 although i thought all the 67 class were EWS however i swear this was a south west train. I would be very grateful if someone could tell me whether i've just writen down a wrong number or that this is actualy write.
Thanks!
(p.s. As you can probaly guess i am very new to the hobby, i origanaly collected the n-gauge models which got me in to the hobby.)