Where to start? In no particular order...
In Spain I suspect that much of anything is being directed to the tourist hotpots in order to cater for demand and rebuild some semblance of an economy.
Shanghai port is effectively closed. This has a far reaching impact as it is tying up alot of shipping and container stock.
More locally, cross Channel routes are restricted in part due to P&O but this has forced traffic to other routes which means increased journey times.
Dangerous goods cannot use the Channel Tunnel and ferries are limited by quantities.
Some leisure centres haven't been fully open until relatively recently and many chemicals have a shelf life, so when the lock downs happened alot of things where destroyed and/or production stopped and as things have opened up, it has taken alot of time to ramp up production and rebuild stocks.
Oh, and apparently* there is a war going on.
*obviously this is actually happening and some of the impacts won't be felt until harvest time.