A couple of places
Pixies Mere Fishery
Only fished for carp here but haven't seen anyting under 22lb 5 come out and broke my pb for a mirror 1st time out. Plenty of large bream, good head of tench not sure what the silver fish side is like but a really nice place well managed and stocked by the looks of things. A bit difficult to find but I can give you directions using the A5 into Dunstable if you've got an atlas or if you're a big girl you could use a sat nav and next to main train line into london so cam be noisy when Thomas and his Friends pay you a visit. The GU runs right next to it to
Also this place is good
Tingrith Fishery - home
For matches the Fringe is your place. Just off J12 M1 head towards Flitwick and it's signposted from main road so directions are good. Had over 250lb fish on the Fringe on a day session using boilie dipped in marmite they were taking it before i could get my rod into the rest. Good crucian, roach, tench, carp etc. Orchid lake fishes well but most action early hours and when the light drops off, carp to 30lb+, chub , tench (i've personally seen them come out in excess of 8lb) and a couple of large pussies.
It does get fished hard though and you'll often see both lakes fully pegged out.
There's a 3rd lake which I haven't fished but it produces good fish