Three windows re-seated by Aqua (2 bedroom, 1 in the living area). 6½ hours total: 4 for Ian and 2.5 for Lyndon.
Looked at sound insulation in Midland Chandlers. 1000 x 600 panels, self-adhesive, for £35 is a bit cheaper than TW. however, the TW catalogue implies theirs are 5 Kg each, which MC's certainly are not. More research needed.
Bought a padlock for the BBQ, a tin of International Yacht Primer and 10 metres of window tape.