Fox cub, Cuckfield, West Sussex.

I have not seen the vixen for a while and no fox poo on the lawn.
She clearly has at least one cub.
Here it is.

Orange-tip Butterfly on Lady's-smock flower, Cuckfield, West Sussex, 16 April 2020.

This butterfly, at first sight resembles a Small White.

The green under-wing confirms it as a female Orange-tip.
More info at https://butterfly-conservation.org/butterflies/orange-tip