OctalDump said: CREST is where it's at. If you are interested in pen testing, though, it's not really about certifications - it's about actual skills. The eLearnSecurity PTS course is relatively cheap, and is hands on. Others have recommended eLearnSecurity's two courses as good prep before taking on OSCP. OSCP can get you part way to CREST (there's a written exam, but they waive the practical). For an analyst role, they often want experience with SIEM tools. There are certifications for things like Splunk, HPE ESM, RSA etc. and training. There's quite a few vendors out there, and I'm not sure who are the most common in the UK. But that is a good start. The other things that might help with analyst roles are CSA+ and CCNA Cyber Ops. GIAC/SANS certs/training are also a great option if you have the money (I think about £3-4,000 each).
wayne_wonder said: Where in the UK are you? in regards to certs even though it's not a technical cert you'll find most jobs want cissp But for pen testing if thats what you want to do get the crest CPSA followed by the OSCP which will in turn grant you the Crest CRT(registered tester) so you'll be sought after if you have the skills. The CPSA is the CEH but written better and more in depth i believe