RE: ADR's21 May 2021 12:40
It’s was a pre-negotiationed Ordinary Trade for 2,127,900
So it could be sell or buy and from days ago - it’s only recorded on the LSE as a buy or sell at the time it is logged (in line with prevailing pricing) so could could be either.
That’s why buy/sell volume is irrelevant.
Either way as it’s pre-negotiated it already has a home so wont help with liquidity.