Absolute taste is TAG's in house caterers and they are on site so will probably not be so expensive on the delivery side.
I suppose it depends how short notice you give. I have known Absolute Taste turn down work if the deadline is too soon but Emily's would probably be the people to go with. Emily's are a local firm, their base is Farnborough.
Deluxe are a bit further out but always deliver on time.
I can guarantee the quality of Deluxe and Emily's! They are both absolutely superb!! Excellently presented, well packed and really fresh! If it needs to be hot food then it arrives hot, not warm and cold food arrives in a chilled van.
Only my mum has used Absolute Taste to my knowledge and according to her it wasn't up to standard, but then my mum's standards are particularly high!
Thumbs up for Emily's and Deluxe