It started off with optimism:
My major investment (£26 if I recall correctly) in nets and supports were going to defeat the dreaded carrot fly. But then I had the bright idea of sowing parsnips along each side of the tunnel and carrots in the middle to be plucked out well before the parsnips matured. The results (above) speak for themselves.
My second net (with only one stray parsnip) is doing better.
Next year I'll crack it!