Discuss it, Line up, tilt wx radar up, pick your track, request it, watch and note the msa, discuss it and go. Re-evaluate in the turn, re-request new track if required, climb above msa , which in the LGW area is fairly quick, climb to level and away you go. No drama, just a few seconds of enjoyable hand flying at low level, gives you a chance to show off your airmanship, and get a mention on Pprune. Glad you enjoyed it.
Landing into a storm/heavy rain, mmmm thinking back to Dallas here, with downdrafts and windshear. If the storm is on the airfield, maybe it would be prudent to hold for a while rather than shoot a missed approach, or if it has passed the airfield and is sitting nicely on the approach path, maybe request a different approach to a clearer ILS. I would have certainly thought about coming back in on 08 if it was available.