Let's see:
Take-off
Runway 31, length 425m + 190m starter extension = 615.
Cessna 152, standard take-off distance 410m. x 1.1 grass factor x 1.33 safety factor = 600m.
600m <625m.
Slightly marginal, but okay so long as you use all of the runway starter extension.
Landing
Runway 31, length 425m, but no landing extension.
Cessna 152, standard landing distance 366m x 1.1 grass factor x 1.43 safety factor = 575m.
425m<<575m !!
If flying out to land somewhere else, yes. If planning a routine landing onto 31 at Shoreham - NO.
Yes, of-course, an experienced pilot who knows their aeroplane should be fine, but anything goes wrong and the insurance company, (other) aircraft owners and AAIB will be less than polite about it - so why do you need to?
G