It's quite possibly due to the combined effects of Brexit and the scarcity of shipping containers.
Many importers have been struggling for some time to get hold of products from abroad, simply because of difficulties in finding freight firms that can offer shipping container capacity at sensible prices, if at all. That applies particular to goods from the Far East where, despite the firm being based in the Netherlands, many of Philips products are actually made.
A year or so ago it cost around £1600 to bring a container from the Far East to the UK. Now the lowest prices on offer are around £10,000, with some firms being charged £15,000 and still having to wait several months before a container actually becomes available.
Because of the massive backlogs at ports like Felixstowe, many shipments which were originally intended for the UK are now being diverted elsewhere, leaving us with shortages of many goods.
Add in the problems of Brexit, with many companies struggling with the paperwork because imports from the EU which contain components from elsewhere in the world are now treated as non-EU imports, and you've got a perfect recipe for chaos!