Alice and the Pirates brand long black pants, with a removable and adjustable silver buckle on the leg, silver button and hidden zip at the front, and 4 pockets.
Bought from a previous seller; tried on once but was unfortunately too small for me.

Measurements
Waist: 14"/35.5 cm flat
Thigh circumference: 11.5"/29 cm
Hips: 19"/48 cm flat
Inseam: 29.5"/75 cm

Non-EU shipping:
Economy: £8
Standard: £17
Tracked: £18
Tracked and signed: £22