Quick update...
Having researched coil springs, shocks, top mounts etc. to death, and taken on-board some pretty sound, independent advice from various sources; I’ve decided to get the VWR Sport Shock Absorber & Spring Kit fitted. The case for getting the front nearside coil spring replaced at the same time as the broken offside spring made sense. Then I was warned that the stock shocks might need replacing (soon) down the line due to knock-on impact of the slight lowering. And having to shell out for more hours of labour, if the shocks did need replacing didn’t fill me with joy, so it seemed prudent to buy the kit and replacement top mounts. I’ll let you know how I get on once car is collected on 13 January.