The United Kingdom is a market where the follower list actually gets read. British audiences are collected by people opening a business in London or Manchester, shipping orders across the Kingdom, taking clients on the ground, or negotiating a collaboration with local labels. Before a collaboration a brand manager opens the profile and checks which countries the followers come from: an audience that looks assembled at random works against the page before terms are even discussed.
Plan for time here. The start window is wide — up to 24 hours after payment — so do not place the order right before an ad launch or an important post. After that the run goes at up to 10 000 per day: small orders close within a day after the start, while the maximum of 100 000 takes around ten days. The lower limit is 10 followers, so you can look at the position before committing to a large purchase.
The refill covers 30 days after delivery: whatever drops off is restored on your request. There is no automatic button on this position — support files the request by hand, so restoration takes longer than the delivery itself. Write with your order number before the month runs out; after that window drop-off is no longer compensated.