At the risk of resurrecting a dead thread, I thought I should update my experiences to close this episode, since I have now finally received a working replacement. (You will recall all this dates back to February!).
Also I note lidl are once again to be selling this same model pillar drill next week (albeit £10 cheaper?!), and others may stumble across this thread looking for guidance.
Some months ago I received a phoned and honest apology from the service team in England, with a promise of a working replacement, and an apologetic explanation there would be a delay before further shipments come in from abroad.
I finally received said replacement 3 weeks ago. I have given it to my daughter's partner ( I have since bought a used warco), and we set it up together. It displays all the same faults, wobbly quill etc. In particular, to my surprise the adjustable drilling table is identical in not being square to the pillar, the front edge higher than the back. It must be a fault with the welding jig then, rather than a one off, unless it is a specific design? It's still too flexible, and flexes downwards when moderate drilling pressure is applied, which you could say then brings it closer to true?
In any case, the advice remains the same. Don't buy.