Mould cleaners are under a tenner on Amazon.
£18k should net you just shy of about £1350/£1400. How much are you contributing to your parents' for board & lodgings? Have you actually got a formal training contract?
Your weight is dangerously high. Suggest:
Fage 0% Yoghurt, 2 tbs, dsp bran, dsp chopped nuts, bit of fresh fruit. Every morning.
Midmorning: satsuma
Lunches: cottage cheese, sardines, chicken breast, tuna or egg with salad - every day. Apple and some grapes.
Mid afternoon: satsuma
Dinner: grilled salmon, other white fish, vegetables or salad, small serving of new potatoes or wholegrain rice. Chopped chicken breast and mushrooms, paprika, lemon juice, cpl tbs of quark with brown rice and green veg. Turkey bol. Bean casserole: red pepper, onion, courgettes, aubergine, tin of Tom's (or two), add a couple of cans of pulses (can ha e it for lunch too)
Pud is a piece of fresh fruit.
Portions shouldn't be bigger than a breakfast plate or v small dinner plate.
No booze, no sweet stuff, no crisps.
Should get 2lb a week off.