If you need 2x or more 10g switches that are silent/passive (no fan mod needed) and all copper (RJ45), the available ones in the UK with available UK support are:
TP Link SX-105. It's a 5 port 10g unmanaged switch, but there are many reports of needing to RMA these back at some point due to a firmware issue where the ports die on their own and don't recover, pricing is not ideal most of the time though. So may want to avoid if you're not feeling lucky or if you'd rather not need to contact Customer Support to RMA. Been out for a few years and more recent ones are coming out that don't appear to have the same issue as the one reported with this model. ~£240 odd.
TrendNET TEG-S750. This is a 5 port 10g unmanaged switch also, much like the TP Link SX-105 above. And unfortunately, it appears to have come from the same generation of design and hardware, as there are also reports of issues with ports failing and needing to be replaced via RMA. ~£220 odd. Also, support is iffy on this one, as whilst possible to obtain in the UK, it looks like mostly imports and thus might be an issue getting support.
QNAP QSW-2104-2T or the 2T-R2 (more recent) edition. 2x 10g ports and 4x 2.5g ports. Can probably service what you need for the near future. But given the price of this normally, you're probably better off looking at one of the 4x or more 10g port switches, especially if you're thinking of adding more 10g capable devices down the line soon. Also has some reports of it going awry, but having got the 1st edition one here, it's mostly finnikey quality cable connecting devices and temperature issues that's the cause of the issues. Was ~£160 odd but has gone EOL so prices have risen.
QNAP QSW-3205-5T. This is a 5x 10g port, fairly recent release and largely seen as a replacement for the 2014-2T above. The only thing is, it's an unmanaged switch still, so if you need any fancy features to control the network, this one won't be viable. But if you just need a core switch that can provide 10g to all node points, then this one can work. ~£250 odd.
Unifi Flex 10gbe. This is a 4x 10g port and 1x 1gb port, has been out for a bit now but still recent. I believe this is a managed switch so if you need those features this one might be for you. Can be powered via POE or AC adapter. ~£280 odd.
Mikrotik CRS304-4XG-IN. This like the Unifi Flex 10gbe above, is a 4x 10g port and 1x 1gb port switch. It has capabilities for management, but unsure on the level offered (as I haven't gone that far in yet with mine). Has a host of methods to power the switch. ~£160 odd. Funnily, with this pricing, you can actually grab two of these and nest them to get 8 ports of 10g, with 6 ports 10g for your devices or nodes, 1 for your router, and 2 (one on each switch) to connect to each other. You then also have the option to add the two 1gb ports to it as well. So can be quite flexible for use. But requires experience or knowledge of their RouterOS to get the most out of configuring them. The 10g ports come active straight away so no need to configure or anything, just plug and play.
Typically the 8 ports or more requires a fan in their cases (as seen and mentioned by
@Quartz regarding their 8 port 10g switches), so have not included them here.
