The UK AIP does indeed specify a max of 185kts for departures and missed approaches in Gen 1.7 page 1-7-51.
All I can say is that in all my time, no-one has paid any attention to it (including FOI), so for Q1, technically yes, but..................
For Q2, there does not appear to be any 'difference' filed in the UK from ICAO, so 'normal rules apply'