FYI, the forks on the OP's Lenton were bent back a smidge, but the repair appears to have bent the forks too far forward as the frame has significant front-end damage. Note the wrinkle under the top tube.

It seems as if the fork repair did, in effect, straighten the frame too, but it's not there yet. The headtube damage needs to be pulled out first before any more eyeballing will work.

-Kurt