You could try Engine Yard (<a href="https://www.engineyard.com/" rel="nofollow">https://www.engineyard.com/</a>), I think they are using EC2 (has a datacenter in Ireland).<p>Can't vouch for how "good" their PHP offering is having never used it, definitely a passionate team though, I've met several of them over the years at PHP related conferences (in the UK) as the company has grown.
shameless plug:
fortrabbit (i am founder) is dedicated "PHP as a Service". Our infrastructure provider is AWS Ireland, we have a lot of clients from the UK.<p>at least one alternative:
<a href="http://viaduct.io/" rel="nofollow">http://viaduct.io/</a> looks promising to me. seems to be from the UK, running on own hardware.