Warm the mackerel strips in a hot dry frying pan for a few minutes, turning, until they’re heated through. Remove from the pan and keep warm.
Place the wraps, one at a time, into the frying pan and turn once, until they’re hot and take on a little colour.
Place the wraps on a serving plate and top with the mackerel strips in the centre. Spoon over the piccalilli and sprinkle with the shredded lettuce. Add a squeeze of lemon juice, roll up and munch!