As above, in local pits, lots of whites with Marsh Brown's and Common Blues (a small but beautiful butterfly) with odd Fritillarries, painted ladies and Red Admirals,
While Peterborough is a bit meh as a place to live, there's no shortage of well managed parkland or former brickpits that are left completely alone, perfect for wildlife, rivers and pits, scrub, grassland , its possibly the perfect environment for them