Sowing over next week!

I think it best you give us your list, rather than us reel out things you may not have. Brassicas are good for sowing now in a cold frame, though.

Squash (Butternut) Hawk F1 - Big No!  Indoors April
Turnip Purple Top Milan - I would sow direct
Fennel - April onwards  - sow direct

Aldi

Leek Musselburgh - Yes
Parsnip Hollow Crown - April on sow direct
Tomato Gardener's Delight - No - Start indoors in s few weeks if you have not heated greenhouse
Beetroot Detroit 2 - April sow direct
Carrot early nantes 5 - April sow direct
Courgette All Green bush - April indoors
Spring Onion White Lisbon - yes - a pinch per module
Spinach Best Perpetual - sow direct
Radish Scarlet Globe - yes
Cabbage Greyhound - yes
Brussels Sprout Evesham Special - yes, but I sow a bit later
Broccoli Early Purple - yes, but I sow a bit later
Cauliflower All The Year Round - yes
Leek Lyon 2 - Prizetaker - yes
Swede Best Of all - no, direct from May

Hope that helps - it's my take on it, others will do it differently. There should be some instructions on the packet!