As you can see from the photo - it didn't go exactly to plan... Back to where I found the roach on Tuesday, this time armed with a few slices of bread to pick out the bigger roach. It didn't work, it attracted monster gudgeon and tiny roach (smaller than Tuesday).
After an hour or so the bites dried up so I put a ledgered pellet out to see if there was a chub or barbel about. I missed two wrap-around bites before connecting to the chunky 4lb barbel above. Great fun in the fast dark water and on a center-pin.