The front brake is adonised red not original the back brake looks original with a quick release for quick wheel removal ,also the front wheel is probably not original as it is chrome and not alloy like the rear wheel ,there is too much crud on the chain wheel to see dates at the moment ,going to tread carefully with the clean up to find a number , the brake levers are as midlife describes they are GB and have super hood on them .The frame is a very light tube set I guess probably 531 like the example bike in the link above , the best bit about this is its been saved from the skip they have 2 huge skips on site that before too long this would have been in if some one with an eye for old bikes didn't show up quick .