You won’t get numbers from the company before they are released...

You won’t get numbers from the company before they are released to market as that would be market sensitive. Online orders in Australia before launching into bricks and mortar would have been measured in the hundreds per month and much fewer than in the bricks and mortar. I’d imagine it would be similar in the UK.
Applyzer shows strong volatility in the UK downloads which I expect would back up the thought that numbers will be relatively low while still selling on line only. For three of the last six days, download ranking in the UK were above what they were on the first relatively strong day so it appears sales in the UK are beginning to gain traction albeit off what I believe is a low base similar to how we started in Australia.